Synonyms: 6,7-Dimethoxy-2-methyl-1-veratrylisoquinoliniumiodide (7CI); Isoquinolinium,1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-2-methyl-, iodide (9CI);Isoquinolinium, 6,7-dimethoxy-2-methyl-1-veratryl-, iodide (8CI);N-Methylpapaverinium iodide (6CI);1-(3,4-Dimethoxybenzyl)-6,7-dimethoxy-2-methoisoquinolinium iodide; 2-Methylpapaveriniumiodide; Papaverine methiodide