Trifluoromethanesulfonic acid (CF₃SO₃H), or triflic acid, is a colorless, hygroscopic liquid and one of the strongest known superacids. It is stable, non-oxidizing, and highly corrosive, widely used as a catalyst and acidifying agent in organic synthesis for esterification, alkylation, and polymerization. Despite its extreme acidity, it resists oxidation and hydrolysis. In India, Ketone Pharma manufactures and supplies high-quality trifluoromethanesulfonic acid.