Desmethylflunitrazepam

Desmethylflunitrazepam (also known as norflunitrazepam, Ro05-4435 and fonazepam) is a benzodiazepine that is a metabolite of flunitrazepam and has been sold online as a designer drug. It has an IC50 value of 1.499 nM for the GABAA receptor.

Desmethylflunitrazepam
Legal status
Legal status
  • CA: Schedule IV
  • DE: NpSG (Industrial and scientific use only)
  • UK: Under Psychoactive Substances Act
Identifiers
  • 5-(2-Fluorophenyl)-7-nitro-1,3-dihydro-1,4-benzodiazepin-2-one
CAS Number
PubChem CID
ChemSpider
UNII
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.018.072
Chemical and physical data
FormulaC15H10FN3O3
Molar mass299.261 g·mol−1
3D model (JSmol)
SMILES
  • FC1=C(C=CC=C1)C2=NCC(NC3=C2C=C(C=C3)[N+](=O)[O-])=O
  • InChI=1S/C15H10FN3O3/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)
  • Key:KNGIGRDYBQPXKQ-UHFFFAOYSA-N
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