Skip to main content
U.S. flag

An official website of the United States government

EC-SERS (Electrochemical Surface-Enhanced Raman Spectroscopy) Spectral Database of Drug and Adulterant Compounds in relation to the manuscript "Novel Electrochemical Surface-Enhanced Raman Spectroscopy: Developing a Spectral Database for Future Forensic Drug Chemistry Libraries."

Published by National Institute of Standards and Technology | National Institute of Standards and Technology | Catalog Last Checked: August 02, 2025 at 03:44 PM | Dataset Last Updated: August 28, 2024
This data set contains the spectral data associated with the collection of EC-SERS spectra using mainly a nontargeted drug identification approach, with several samples using a targeted fentanyl identification approach. The data set contains the replicate measurements and averaged Raman spectra used in the characterization of the analytes (drugs of abuse and adulterant compounds) to allow for forensic library formation. The data set also contains spectra of analytes collected at varying concentrations and additional fentanyl analog data collected using a targeted method.

Resources

502 resources available

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

Complete Metadata
@type dcat:Dataset
accessLevel public
accrualPeriodicity irregular
bureauCode 
[
  "006:55"
]
contactPoint 
{
  "fn": "Colby Ott",
  "hasEmail": "mailto:colby.ott@nist.gov"
}
description This data set contains the spectral data associated with the collection of EC-SERS spectra using mainly a nontargeted drug identification approach, with several samples using a targeted fentanyl identification approach. The data set contains the replicate measurements and averaged Raman spectra used in the characterization of the analytes (drugs of abuse and adulterant compounds) to allow for forensic library formation. The data set also contains spectra of analytes collected at varying concentrations and additional fentanyl analog data collected using a targeted method.
distribution 
[
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/4-ANPP_5ppm_nontarget_Spectrum_326.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/4-ANPP_5ppm_nontarget_Spectrum_326.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/4ANPP_5ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/4ANPP_5ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Acetyl_fentanyl_10ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Acetyl_fentanyl_10ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Acetyl_fentanyl_10ppm_nontarget_Spectrum_295.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Acetyl_fentanyl_10ppm_nontarget_Spectrum_295.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Acryl_fentanyl_25ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Acryl_fentanyl_25ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Acryl_fentanyl_nontarget_Spectrum_292.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Acryl_fentanyl_nontarget_Spectrum_292.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_100ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_100ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_100ppm_nontarget_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_100ppm_nontarget_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_100ppm_nontarget_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_100ppm_nontarget_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep2_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep2_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep3_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_10ppm_nontarget_rep3_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_333ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_333ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_333ppm_nontarget_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_333ppm_nontarget_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_333ppm_nontarget_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_333ppm_nontarget_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep2_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep2_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep3_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Alprazolam_5ppm_nontarget_rep3_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Buprenorphine_100ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Buprenorphine_100ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Buprenorphine_100ppm_nontarget_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Buprenorphine_100ppm_nontarget_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep2_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep2_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep3_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_1000ppm_nontarget_rep3_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep1_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep1_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep2_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep2_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep3_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_100ppm_nontarget_rep3_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep1_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep1_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep2_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep2_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep3_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Cocaine_50ppm_nontarget_rep3_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep2_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep2_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep3_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_1000_ppm_nontarget_rep3_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep1_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep1_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep2_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep2_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep3_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_100ppm_nontarget_rep3_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Codeine_300ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_100ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_10ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_10ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_10ppm_nontarget_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Dextromethorphan_10ppm_nontarget_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diltiazem_100ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diltiazem_100ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diltiazem_100ppm_nontarget_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diltiazem_100ppm_nontarget_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diltiazem_10ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diltiazem_10ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diltiazem_10ppm_nontarget_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diltiazem_10ppm_nontarget_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep1_Spectrum_9.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep1_Spectrum_9.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep2_Spectrum_9.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep2_Spectrum_9.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep3_Spectrum_9.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_10ppm_nontarget_rep3_Spectrum_9.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_1ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_1ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_1ppm_nontarget_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Diphenhydramine_1ppm_nontarget_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etizolam_50ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Etonitazene_100ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep2_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep2_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep3_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1000ppm_nontarget_rep3_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_100ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_100ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_100ppm_nontarget_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_100ppm_nontarget_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_10ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_10ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_10ppm_nontarget_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_10ppm_nontarget_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontargeT_rep3_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontargeT_rep3_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep1_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep1_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep2_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep2_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep4.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep4.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep4_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep4_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep5.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep5.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep5_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Fentanyl_1ppm_nontarget_rep5_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Furanyl_fentanyl_25ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Furanyl_fentanyl_25ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Furanyl_fentanyl_nontarget_Spectrum_293.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Furanyl_fentanyl_nontarget_Spectrum_293.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep4.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep4.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep4_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_1001ppm_nontarget_rep4_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep1_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep1_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep2_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep2_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep3_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontarget_rep3_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontargeted_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_100ppm_nontargeted_rep3.exp.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Heroin_300ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Hydroxyzine_5ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Hydroxyzine_5ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Hydroxyzine_5ppm_nontarget_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Hydroxyzine_5ppm_nontarget_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_1001_ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_100ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_100ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_100ppm_nontarget_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_100ppm_nontarget_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Levamisole_10ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Lidocaine_1001_ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/MIDAS%20EC-SERS%20Library%20Spectra.xlsx"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/MIDAS%20EC-SERS%20Library%20Spectra.xlsx.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methadone_50ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep1_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep1_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep2_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep2_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep3_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methamphetamine_1000ppm_nontarget_rep3_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methoxyacetyl_fentanyl_25ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methoxyacetyl_fentanyl_25ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methoxyacetyl_fentanyl_25ppm_nontarget_Spectrum_293.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Methoxyacetyl_fentanyl_25ppm_nontarget_Spectrum_293.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep2_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep2_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep3_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_1000_ppm_nontarget_rep3_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_100ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_100ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_100ppm_nontarget_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_100ppm_nontarget_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_333ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_333ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_333ppm_nontarget_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Morphine_333ppm_nontarget_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Naltrexone_1000ppm_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Naltrexone_1000ppm_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Naltrexone_1000ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Naltrexone_1000ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep2_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep2_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep3_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Nicotine_100ppm_nontarget_rep3_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npiperidinylmetonitazene_100ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Npyrrolidinoetonitazene_100ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_form_solid_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_form_solid_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_form_solid_nontarget_rep2_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_form_solid_nontarget_rep2_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_form_solid_nontarget_rep3_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_form_solid_nontarget_rep3_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_solid_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_solid_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_solid_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_solid_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_solid_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Procaine_solid_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Quinine_1013ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/README.txt"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/README.txt.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_100ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_100ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_100ppm_nontarget_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_100ppm_nontarget_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep1_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep1_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep2_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep2_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep3_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_10ppm_nontarget_rep3_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_333ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_333ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_333ppm_nontarget_Spectrum_6.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Sufentanil_333ppm_nontarget_Spectrum_6.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep1_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep1_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep2_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep2_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep3_Spectrum_7.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Temazepam_100ppm_nontarget_rep3_Spectrum_7.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Valeryl_fentanyl_25ppm_nontarget.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Valeryl_fentanyl_25ppm_nontarget.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Valeryl_fentanyl_25ppm_nontarget_Spectrum%20293.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Valeryl_fentanyl_25ppm_nontarget_Spectrum%20293.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep1.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep1.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep1_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep1_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep2.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep2.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep2_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep2_Spectrum_5.csv.sha256"
  },
  {
    "mediaType": "text/x-expect",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep3.exp"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep3.exp.sha256"
  },
  {
    "mediaType": "text/csv",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep3_Spectrum_5.csv"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-3502/Xylazine_1000ppm_nontarget_rep3_Spectrum_5.csv.sha256"
  }
]
identifier ark:/88434/mds2-3502
issued 2024-09-18
keyword 
[
  "Electrochemical surface-enhanced Raman spectroscopy (EC-SERS)",
  "Raman",
  "forensic drug analysis",
  "forensics",
  "spectral library",
  "spectroscopy"
]
landingPage https://data.nist.gov/od/id/mds2-3502
language 
[
  "en"
]
license https://www.nist.gov/open/license
modified 2024-08-28 00:00:00
programCode 
[
  "006:045"
]
publisher 
{
  "name": "National Institute of Standards and Technology",
  "@type": "org:Organization"
}
theme 
[
  "Chemistry:Analytical chemistry",
  "Forensics:Drugs and toxicology",
  "Health:Pharmaceuticals",
  "Physics:Spectroscopy",
  "Public Safety:Law enforcement"
]
title EC-SERS (Electrochemical Surface-Enhanced Raman Spectroscopy) Spectral Database of Drug and Adulterant Compounds in relation to the manuscript "Novel Electrochemical Surface-Enhanced Raman Spectroscopy: Developing a Spectral Database for Future Forensic Drug Chemistry Libraries."

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov