Synonyms: Isoquinoline,3,4-dihydro-6,7-dimethoxy-1-veratryl- (6CI,7CI,8CI);1-(3,4-Dimethoxybenzyl)-3,4-dihydro-6,7-dimethoxyisoquinoline;1-(3,4-Dimethoxybenzyl)-6,7-dimethoxy-3,4-dihydroisoquinoline;Dihydropapaverine;Paverin;1-((3,4-dimethoxyphenyl)methyl)-3,4-dihydro-6,7-dimethoxyisoquinoline;Dihydropapaverine hydrochloride;