Synonyms: Terazosin Hydrochloride Imp. A (EP), Alfuzosin Hydrochloride Imp. B (EP), Prazosin Hydrochloride Imp. A (EP), Quinazoline, 4-amino-2-chloro-6,7-dimethoxy- (8CI), 2-Chloro-4-amino-6,7-dimethoxyquinazoline, 2-Chloro-6,7-dimethoxy-4-quinazolinamine, 4-Amino-2-chloro-6,7-dimethoxyquinazoline,2-Chloro-6,7-dimethoxyquinazolin-4-amine, Doxazosin Mesilate Imp. F (EP)