1,2,3,4-Tetrahydro-6,7-dimethoxy-1-methyl-3-(4-methylphenyl)isoquinoline hydrochloride 6,7-Dimethoxy-1-methyl-3-(4-tolyl)-1,2,3,4-tetrahydroisoquinoline hydrochloride 87203-94-9 Isoquinoline, 1,2,3,4-tetrahydro-6,7-dimethoxy-1-methyl-3-(4-methylphenyl)-, hydrochloride