Synonyms: Isoquinoline,1,2,3,4-tetrahydro-6,7-dimethoxy-, hydrochloride (7CI,8CI,9CI);1,2,3,4-Tetrahydro-6,7-dimethoxyisoquinolinehydrochloride;6,7-Bis(methyloxy)-1,2,3,4-tetrahydroisoquinoline hydrochloride;Isoquinoline,1,2,3,4-tetrahydro-6,7-dimethoxy-, hydrochloride (1:1);6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinoline monohydrochloride;6,7-Dimethoxy-3,4-dihydro-2(1H)-isoquinolinehydrochloride;Heliamine hydrochloride;