nifoxipam nifoxipam nifoxipam (3-hydroxydesmethylflunitrazepam, dp 370) is a benzodiazepine that is a minor metabolite of flunitrazepam and has been sold online as a designer drug. nifoxipamlegal statuslegal status ca: schedule iv de: npsg (industrial and scientific use only) uk: under psychoactive substances act identifiers iupac name 5-(2-fluorophenyl)-3-hydroxy-7-nitro-2,3-dihydro-1h-1,4-benzodiazepin-2-one cas number74723-10-7pubchem cid3058221chemspider2319383unii9o6c9m3ch6comptox dashboard (epa)dtxsid80996250 chemical and physical dataformulac15h10fn3o4molar mass315.260 g·mol−13d model (jsmol)interactive image smiles o=c1c(o)n=c(c2=cc=cc=c2f)c3=cc(()=o)=cc=c3n1 inchi inchi=1s/c15h10fn3o4/c16-11-4-2-1-3-9(11)13-10-7-8(19(22)23)5-6-12(10)17-14(20)15(21)18-13/h1-7,15,21h,(h,17,20)key:uhfiftrhlbawgy-uhfffaoysa-n nifoxipam produces strong tranquillising and sleep-prolonging effects and has much lower toxicity compared to lormetazepam and flunitrazepam in mice.