1,4-Dihydro-4-phenyl-5H-1,2,4-benzotriazepin-5-one 5-26-04-00345 (Beilstein Handbook Reference) 5H-1,2,4-Benzotriazepin-5-one, 1,4-dihydro-4-phenyl- 63931-65-7 BRN 0526168