20412-65-1 Isoquinoline, 1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-1-veratryl- Isoquinoline, 1-[(3,4-dimethoxyphenyl)methyl]-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl- Laudanosine N-Methyltetrahydropapaverine NSC331268 Veraisoquin