1,4-Dihydro-7-chloro-4-ethyl-5H-1,2,4-benzotriazepin-5-one 5-26-04-00345 (Beilstein Handbook Reference) 5H-1,2,4-Benzotriazepin-5-one, 1,4-dihydro-7-chloro-4-ethyl- 63931-70-4 BRN 0519734