1-((3,4-Dimethoxyphenyl)methyl)-6,7-dimethoxy-2-methylisoquinolinium iodide 2679-26-7 EINECS 220-232-8 Isoquinolinium, 1-((3,4-dimethoxyphenyl)methyl)-6,7-dimethoxy-2-methyl-, iodide N-Methylpapaverine NSC 169685