1H-Benzimidazolium, 1-ethenyl-2-(ethenylthio)-3-methyl-, iodide 3-Methyl-1-vinyl-2-(vinylthio)benzimidazolium iodide 66392-38-9 Benzimidazolium, 3-methyl-1-vinyl-2-(vinylthio)-, iodide N,S-Divinyl-2-mercaptobenzimidazole iodomethylate