Structural, chemical and analytical data on controlled substances. The single reference site for forensic drug chemists. Click to login as forendex superuser Southern Association of Forensic Scientitsts
Search for a substance: Help
CSA Names: Clonazepam
CSA Location: Schedule IV Section (c) Subsection (11) DEA code 2737
CSA History: 40 FR 4016 proposed to add (and to renumber subsequent entries) on 27 Jan 1975
40 FR 23998 added (and renumbered subsequent entries) effective 2 Jul 1975
Names: 5-(2-Chlorophenyl)-7-nitro-1,3-dihydro-2H-1,4-benzodiazepin-2-one (IUPAC)
Molecular formula: C15H10ClN3O3
Nominal mass: 315
Average mass: 315.7112
Monoisotopic mass: 315.041069
CAS registry number: 1622-61-3
ChemSpider: 2700
PubChem: 2802
Wikipedia: Clonazepam
Erowid: Clonazepam
Drugs-Forum: Clonazepam
Bluelight: Clonazepam
Standard InChI: InChI=1S/C15H10ClN3O3/c16-12-4-2-1-3-10(12)15-11-7-9(19(21)22)5-6-13(11)18-14(20)8-17-15/h1-7H,8H2,(H,18,20)
SMILES: O=C1CN=C(c2c(N1)ccc(c2)N(=O)=O)c1ccccc1Cl
Property Value Remarks
Property Value Remarks
Location Type Remarks
clonazepam ms.pdf EI MS Agilent MSD
Clonazepam MS (NIST).pdf EI MS Used with the permission of NIST Mass Spectrometry Data Center Collection (C) 2008 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.
Clonazepam.pdf EI MS UV FTIR Used with permission of CND Analytical. From "Analytical Profiles of the Benzodiazepines"
Clonazepam.bmp GC IRD Used with Permission of Oklahoma State Bureau of Investigation, Forensic Science Center, Controlled Substances Laboratory.
clonazepam-raman.pdf RAMAN GBI DOFS
Clonazepam edit.pdf SP-GC-IR DiscovIR
Vendor ID URL
Biosynth Q-200880
Cerilliant C-907
Grace Davison (Alltech) 01794
LGC MM0945.00
Lipomed CLO-105§ion=mediadir&cmd=detail
Toronto Research Chemicals C587080
U.S. Pharmacopeia 1140305
Title Publication Date Vol. Iss. Page(s) Remarks
A new method for the simultaneous determination of 1,4-benzodiazepines and amfepramone as adulterants in phytotherapeutic formulations by voltammetry For. Sci. Int. 2010-10-10 Vol 202 Leandro M. de Carvalho et al
Hydrolysis of clonazepam, flunitrazepam and nitrazepam by hydrochloric acid. Identification of some additional products For. Sci. Int. 1984-02-01 Vol 24 M.M.A. de Bruyne, A. Sinnema, A.M.A. Verweij
Separation of Benzodiazepines Using Capillary Electrochromatography J. Chrom. Sci. 2004-05-01 Vol 42 (5) Constantina P. Kapnissi and Isiah M. Warner
Separation of 1,4-Benzodiazepines and Analogues Using Cholesteryl-10-Undecenoate Bonded Phase in Microcolumn Liquid Chromatography J. Chrom. Sci. 1998-03-01 Vol 36 (3) A. Catabay, M. Taniguchi and K. Jinno
Substance name
Substance name
Please send us your comments, questions or suggestions · Collaborate with colleagues at Forendex Forum
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License Updated 3 March 2017