(E)-5-(5-Carboxypentylidene)-10-methyl-5,11-dihydropyrido(3,4-c)(1)benzazepin-11(10H)-one 127654-15-3 Hexanoic acid, 6-(10,11-dihydro-10-methyl-11-oxo-5H-pyrido(3,4-c)(1)benzazepin-5-ylidene)-, (E)-