Synonyms: Isoquinoline,1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-3-methyl-, hydrochloride (9CI);Isoquinoline, 6,7-dimethoxy-3-methyl-1-veratryl-, hydrochloride (8CI);1-(3,4-Dimethoxybenzyl)-3-methyl-6,7-dimethoxyisoquinoline hydrochloride;6,7-Dimethoxy-1-(3,4-dimethoxybenzyl)-3-methylisoquinoline hydrochloride