Synonyms:hydrochloride;Nikoshpan;2-Pyridinecarboxylic acid,mixt. with 1-((3,4-diethoxyphenyl)methylene)-6,7-diethoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride;Nicospan;(3E)-3-[(3,4-diethoxyphenyl)methylidene]-6,7-diethoxy-2,4-dihydro-1H-isoquinoline;