1,2-Dimethyl-3-(4-sulfobutyl)-5-(trifluoromethyl)benzimidazolium inner salt 1,2-Dimethyl-3-(4-sulphonatobutyl)-5-(trifluoromethyl)-1H-benzimidazolium 1H-Benzimidazolium, 1,2-dimethyl-3-(4-sulfobutyl)-5-(trifluoromethyl)-, hydroxide, inner salt 1H-Benzimidazolium, 1,2-dimethyl-3-(4-sulfobutyl)-5-(trifluoromethyl)-, inner salt 63815-69-0 EINECS 264-473-7