英文别名6,7-dimethoxy-2-piperazin-1-ylquinazolin-4-amine,dihydrochloride; 1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)piperazine,dihydrochloride; 2-(1-Piperazinyl)-4-amino-6,7-dimethoxyquinazoline-2HCl; 4-Quinazolinamine,6,7-dimethoxy-2-(1-piperazinyl)-,dihydrochloride; Terazosin Impurity; N-Des((tetrahydrofuran-2-yl)methanone)) Terazosin Dihydrochloride; Terazosin-004-2HCl 
