tert-Butyl(diphenyl)silyl trifluoromethanesulphonate92886-86-733 % similar Tetraethylammonium trifluoromethanesulfonate35895-69-332 % similar Ethyl benzenesulfonate515-46-832 % similar 2,2,2-Trifluoroethyl methanesulfonate25236-64-031 % similar 1,4-Diethyl 2,2,3,3-tetrafluorobutanedioate377-71-931 % similar Ethyl trifluoroacetate383-63-131 % similar Diethyl 2,2-difluoromalonate680-65-931 % similar Ethyl p-toluenesulfonate80-40-031 % similar 1,1,1-Trifluoro-N-methyl-methanesulfonamide34310-29-730 % similar 2-Hydroxytetrafluoroethanesulfonic acid β-sultone697-18-730 % similar