127653-87-6 6-(9-Bromo-5,6-dihydro-5-oxo-11H-pyrido(4,3-c)(1)benzazepin-11-ylidene)hexanoic acid 9-Bromo-11-(5-carboxypentylidene)-5,11-dihydropyrido(4,3-c)(1)benzazepin-5(6H)-one Hexanoic acid, 6-(9-bromo-5,6-dihydro-5-oxo-11H-pyrido(4,3-c)(1)benzazepin-11-ylidene)-