Synonyms: 1(3H)-Isobenzofuranone,6,7-dimethoxy-3-(5,6,7,8-tetrahydro-4-methoxy-6-methyl-1,3-dioxolo[4,5-g]isoquinolin-5-yl)-,[S-(R*,S*)]-;Narcotine (7CI,8CI);(-)-Narcotine;(-)-a-Narcotine;Capval;Coscopin;L-a-Noscapine;Longactin;Longatin;Methoxyhydrastine;NSC 5366;Narcompren;Narcosine;Narcotin;Narcotussin;Nectadon;Nicolane;Nipaxon;Noscapin;Noscapine;Opian;Opianin;Opianine;Tusscapine;Vadebex;a-Narcotine;