Trimethylsilyl trifluoromethanesulfonate
CAS No.: 27607-77-8
Formula: C4H9F3O3SSi        CF3SO3Si(CH3)3

Molecular Weight: 222.26
Melting point: none       Boiling point:  140℃
Liquid Density: 1.228g/ml      Solubility in water: reacted
Danger classification: 8 (corrosive), 3(combustible liquid)
standard: 
Purity: ≥99%      Cl- : ≤30ppm   Water:  0.1% max

Applications:  silylating agent widely used to protect groups such as alcohols, carboxylic acids, carbonyls, mercaptans and nitro compounds.Initiator of the cationic polymerization.An efficient Lewis acid catalyst.An effective deprotective agent. For example, tert-butyl esters can be easily cleaved by TMSOTf, whereas benzyl esters are unaffected, permitting selective cleavage.