Ro07-3953

Ro07-3953 (Diflunordazepam) is a benzodiazepine derivative which is the 2',6'-difluoro derivative of nordazepam. It was invented in the 1970s but was never marketed,^[1][2] however it has recently appeared on the market as a designer drug, first reported in Sweden in December 2024.^[3][4]

Legal status

• CA: Schedule IV
• DE: NpSG (Industrial and scientific use only)
• UK: Under Psychoactive Substances Act

CAS Number

• 28910-86-3

PubChem CID

• 23275763

ChemSpider

• 10441869

Quick facts Legal status, Identifiers ...

Ro07-3953

Legal status
Legal status	CA: Schedule IV DE: NpSG (Industrial and scientific use only) UK: Under Psychoactive Substances Act
Identifiers
IUPAC name 7-chloro-5-(2,6-difluorophenyl)-1H-benzo[e][1,4]diazepin-2(3H)-one
CAS Number	28910-86-3
PubChem CID	23275763
ChemSpider	10441869
ChEMBL	ChEMBL151574
CompTox Dashboard (EPA)	DTXSID10877922
Chemical and physical data
Formula	C15H91ClF2N2O
Molar mass	389.35 g·mol−1
3D model (JSmol)	Interactive image
SMILES C1C(=O)NC2=C(C=C(C=C2)Cl)C(=N1)C3=C(C=CC=C3F)F
InChI InChI=1S/C15H9ClF2N2O/c16-8-4-5-12-9(6-8)15(19-7-13(21)20-12)14-10(17)2-1-3-11(14)18/h1-6H,7H2,(H,20,21) Key:WENMWXYJTWETRE-UHFFFAOYSA-N

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