Synonyms: Isoquinoline,1-[(3,4-dimethoxyphenyl)methyl]-1,2,3,4-tetrahydro-6,7-dimethoxy-,hydrochloride, (1R)- (9CI);Isoquinoline,1-[(3,4-dimethoxyphenyl)methyl]-1,2,3,4-tetrahydro-6,7-dimethoxy-,hydrochloride, (R)-;(D)-(-)-Norlaudanosine hydrochloride;(R)-(-)-Norlaudanosine hydrochloride;D-(-)-Tetrahydropapaverine hydrochloride;