Bismuth(III) Trifluoromethanesulfonate (3:1)

• CAT Number: R026885
• CAS Number: 88189-03-1
• Molecular Formula: C3BiF9O9S3
• Molecular Weight: 656.17
• Purity: ≥95%
• Synonyms: Bismuth Triflate; Bismuth Tris(trifluoromethanesulfonate); Bismuth(3+) Triflate; Bismuth(3+) Trifluoromethanesulfonate; Bismuth(III) Triflate; Bismuth(III) Trifluoromethanesulfonate; Trifluoromethanesulfonic Acid Bismuth(3+) Salt
• Storage: Desiccate at +4C
• IUPAC Name: bismuth;trifluoromethanesulfonate
• InChI: InChI=1S/3CHF3O3S.Bi/c3*2-1(3,4)8(5,6)7;/h3*(H,5,6,7);/q;;;+3/p-3
• InChIKey: NYENCOMLZDQKNH-UHFFFAOYSA-K
• SMILES: C(F)(F)(F)S(=O)(=O)[O-].C(F)(F)(F)S(=O)(=O)[O-].C(F)(F)(F)S(=O)(=O)[O-].[Bi+3]

Bismuth(III) trifluoromethanesulfonate(CAT: R026885), commonly known as bismuth triflate, is a Lewis acid catalyst with the molecular formula Bi(OSO₂CF₃)₃. It appears as a white to off-white hygroscopic solid, soluble in polar organic solvents such as acetonitrile, nitromethane, and alcohols. Noted for its strong acidity, thermal stability, and water tolerance, bismuth triflate is widely used in organic synthesis for promoting Friedel–Crafts acylations and alkylations, Mukaiyama aldol reactions, and other electrophilic transformations. Its low toxicity compared to many heavy-metal catalysts makes it attractive for green chemistry applications. Additionally, it finds utility in carbohydrate chemistry, heterocycle synthesis, and fine chemical manufacturing.