11-(5-Carboxypentylidene)-7-methyl-5,11-dihydropyrido(4,3-c)(1)benzazepin-5(6H)-one 127653-88-7 6-(5,6-Dihydro-7-methyl-5-oxo-11H-pyrido(4,3-c)(1)benzapin-11-ylidene)hexanoic acid Hexanoic acid, 6-(5,6-dihydro-7-methyl-5-oxo-11H-pyrido(4,3-c)(1)benzapin-11-ylidene)-