11-(4-Carboxypentylidene)-5,11-dihydropyrido(4,3-c)(1)benzazepin-5(6H)-one 127653-90-1 5-(5,6-Dihydro-5-oxo-11H-pyrido(4,3-c)(1)benzazepin-11-ylidene)pentanoic acid Pentanoic acid, 5-(5,6-dihydro-5-oxo-11H-pyrido(4,3-c)(1)benzazepin-11-ylidene)-