Synonyms: 1,2-Dihydro-5-phenyl-3H-1,4-benzodiazepin-2-one;1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one; 1,3-Dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one;5-Phenyl-1,3-dihydrobenzo[e][1,4]diazepin-2-one;5-Phenyl-1H-benzo[e][1,4]diazepin-2(3H)-one;5-Phenyl-2,3-dihydro-1H-1,4-benzodiazepin-2-one; Dechlorodemethyldiazepam;Desmethyldechlorodiazepam; NSC 656624; Ro 05-2921; Ro 5-2921