Pharmaceutical IntermediateChina 4-Amino-5-Chloro-2, 3-Dihydro-7-Benzofurancarboxylic Acid CAS No. 123654-26-2, Find details about China Chemical, Pharmaceutical Raw Material from 4-Amino-5-Chloro-2, 3-Dihydro-7-Benzofurancarboxylic Acid CAS No. 123654-26-2