1,3-Dihydro-4(or 5)-methyl-2H-benzimidazole-2-thione 2-MMBI 2-Mercapto-4(or 5)-methylbenzimidazole 2-Mercaptomethylbenzimidazole 2-Mercaptotoluimidazole 2H-Benzimidazole-2-thione, 1,3-dihydro-4(or 5)-methyl- 4(or 5)-Methyl-2-mercaptobenzimidazole 53988-10-6 EINECS 258-904-8 Methylmercaptobenzimidazole Nocrac MMB Vanox MTI Vulkanox MB 2