1,2,3,4-Tetrahydro-6,7-dimethoxy-1-veratryl-isoquinoline hydrochloride 1-(3,4-Dimethoxybenzyl)-1,2,3,4-tetrahydro-6,7-dimethoxyisoquinolinium chloride 13074-31-2 6429-04-5 EINECS 229-213-9 ISOQUINOLINE, 1,2,3,4-TETRAHYDRO-6,7-DIMETHOXY-1-VERATRYL-, HYDROCHLORIDE NSC 118072 Papaverine, 1,2,3,4-tetrahydro-, hydrochloride Tetrahydropapaverine hydrochloride