Ro05-4082

Ro05-4082 (N-methylclonazepam, ID-690) is a benzodiazepine derivative developed in the 1970s. It has sedative and hypnotic properties, and has around the same potency as clonazepam itself.^[1] It was never introduced into clinical use. It is a structural isomer of meclonazepam (3-methylclonazepam), and similarly has been sold as a designer drug, first being identified in Sweden in 2017.^[2]

Ro05-4082

Legal status
Legal status	CA: Schedule IV DE: NpSG (Industrial and scientific use only) UK: Under Psychoactive Substances Act
Identifiers
IUPAC name 5-(2-chlorophenyl)-1-methyl-7-nitro-3H-1,4-benzodiazepin-2-one
CAS Number	5527-71-9 Y
PubChem CID	528222
UNII	89WG8CN9AJ
CompTox Dashboard (EPA)	DTXSID60203777
Chemical and physical data
Formula	C16H12ClN3O3
Molar mass	329.74 g·mol−1
3D model (JSmol)	Interactive image
SMILES CN1C(=O)CN=C(C2=C1C=CC(=C2)[N+](=O)[O-])C3=CC=CC=C3Cl
InChI InChI=1S/C16H12ClN3O3/c1-19-14-7-6-10(20(22)23)8-12(14)16(18-9-15(19)21)11-4-2-3-5-13(11)17/h2-8H,9H2,1H3 Key:AZVBJJDUDXZLTM-UHFFFAOYSA-N

See also

• Cloniprazepam
• Flunitrazepam