Pharmaceutical IntermediateChina 7, 8-Dimethoxy-1, 3-Dihydro-2h-3-Benzazepin-2-One CAS 73942-87-7, Find details about China 7 8-Dimethoxy-1 3-Dihydro-2h-3-Benzazepin-2-One, Benzoic Acid 2-Hydroxy-4 5-Dimethoxy- from 7, 8-Dimethoxy-1, 3-Dihydro-2h-3-Benzazepin-2-One CAS 73942-87-7