11-(N-Methylnipecotyl)-6,11-dihydro-5H-pyrido(2,3-b)-1,5-benzodiazepin-5-one 121798-89-8 5H-Pyrido(2,3-b)(1,5)benzodiazepin-5-one, 6,11-dihydro-11-((1-methyl-3-piperidinyl)carbonyl)-, monohydrochloride DF 594 DF-594