Synonyms: Isoquinoline,1-[(3,4-dimethoxyphenyl)methyl]-1,2,3,4-tetrahydro-6,7-dimethoxy-, (S)-;Laudanosine, 2-demethyl- (8CI); (-)-1,2,3,4-Tetrahydropapaverine;(-)-N-Norlaudanosine; (-)-Norlaudanosine; (-)-Tetrahydropapaverine;(S)-(-)-Tetrahydropapaverine; (S)-Norlaudanosine; L-(-)-Tetrahydropapaverine;N-Norlaudanosine, (-)-; Norlaudanosine; S-(-)-N-Norlaudanosine;Tetrahydropapaverine