Trimethylsilyl 2,2-difluoro-2-(fluorosulfonyl)acetate120801-75-4100 % similar Trimethyl(trifluoroacetato)silane400-53-353 % similar Trimethylsilyl acetate2754-27-033 % similar Trimethylsilyl trifluoromethanesulfonate27607-77-832 % similar Bis(trimethylsilyl) malonate18457-04-031 % similar Trifluoromethanesulfonyl fluoride335-05-731 % similar Bstfa25561-30-230 % similar