Pharmaceutical IntermediateChina 9-Bromo-3- (2-bromoacetyl) -10, 11-Dihydro-5h-Benzo[D]Naphtho[2, 3-B]Pyran-8 (9H) -One CAS No 1438383-89-1, Find details about China 9-Bromo-3-(2-bromoacetyl)-10 11-Dihydro-5h-Benzo, CAS No 1438383-89-1 from 9-Bromo-3- (2-bromoacetyl) -10, 11-Dihydro-5h-Benzo[D]Naphtho[2, 3-B]Pyran-8 (9H) -One CAS No 1438383-89-1