1H-Benzimidazole, 1-methyl-2-(methylthio)-, monohydriodide 2-Methylthiobenzimidazole methiodide 3-Methyl-2-methylthiobenzimidazolium iodide 73688-75-2 Benzimidazolium, 3-methyl-2-methylthio-, iodide NSC71892