5-Methyl-6,7,9,10-tetrahydro-5H-isoquino(2,1-d)(1,4)benzodiazepin-6-one 67239-22-9 BRN 0679455 ISOQUINO(2,1-d)(1,4)BENZODIAZEPIN-6(7H)-ONE, 5,9,10,14b-TETRAHYDRO-5-METHYL-