2H-1,4-Benzodiazepin-2-one, 7-chloro-1-(2-(ethylsulfonyl)ethyl)-5-(2-fluorophenyl)-1,3-dihydro- 52042-01-0 7-Chloro-1-(2-(ethylsulfonyl)ethyl)-5-(2-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazep in-2-one 7-Chloro-1-(2-(ethylsulfonyl)ethyl)-5-(o-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one Elfazepam Elfazepam [USAN:INN] Elfazepamum [INN-Latin] NSC 297938 SK&F 72517