3,4-Dihydro-6,7-dimethoxy-1-(3,4-dimethoxyphenethyl)isoquinoline hydrochloride 81182-04-9 Homodihydropapaverine hydrochloride ISOQUINOLINE, 3,4-DIHYDRO-6,7-DIMETHOXY-1-(3,4-DIMETHOXYPHENETHYL)-, HYDROCHLORI Isoquinoline, 3,4-dihydro-6,7-dimethoxy-1-(3,4-dimethoxyphenethyl)-, hydrochloride