Synonyms: 1,2-Dehydrosalsolidine;1-Methyl-3,4-dihydro-6,7-dimethoxyisoquinoline;1-Methyl-6,7-dimethoxy-3,4-dihydroisoquinoline;3,4-Dihydro-6,7-dimethoxy-1-methylisoquinoline; 3,4-Dihydronigellimine;6,7-Dimethoxy-1-methyl-3,4-dihydroisoquinoline; Dehydrosalsolidine; NSC 144726