1H,3H-Naphtho(1,8-cd)pyran-1,3-dione, 6-bromo- (CAS NO.81-86-7), its Synonyms are 6-Bromo-1H,3H-naphtho(1,8-cd)pyran-1,3-dione ; 4-Bromo-1,8-naphthalic anhydride ; 7-Bromo-1H,3H-naphtho[1,8-cd]pyran-1,3-dione .