1-Piperazincarboxylic acid, 4-(6,7-dimethoxy-4-quinazolinyl)-, 2-hydroxy-2-methylpropyl ester, nomohydrochloride 2-Hydroxy-2-methylpropyl-4-(6,7-dimethoxy-4-chinazolinyl)-1-piperazincarboxylate hydrochloride 23256-28-2 CP 14185-1 Hoquizil hydrochloride Hoquizil hydrochloride [USAN]