Synonyms: Piperazine,1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-[(2,3-dihydro-1,4-benzodioxin-2-yl)carbonyl]-(9CI);[4-(4-amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl](2,3-dihydro-1,4-benzodioxin-2-yl)methanone;Doxazosine;UK 33274;piperazine, 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-[(2,3-dihydro-1,4-benzodioxin-2-yl)carbonyl]-;2-[4-(2,3-dihydro-1,4-benzodioxin-2-ylcarbonyl)pipérazin-1-yl]-6,7-diméthoxyquinazolin-4-amine;