Methyl trifluoromethansulfonate Tags: Chemical Compound, Chemical Substance.Methyl trifluoromethanesulfonate commonly abbreviated MeOTf is the organic compound with the formula CF3SO2OCH3. It is a colourless liquid that is a very powerful (and very dangerous) methylating reagent in chemistry. thumbnail IUPAC name Methyl trifluoromethanesulfonate Learn more... Loading...