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Perfluorobutanesulfonyl fluoride CAS 375-72-4

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  • Chemical name: Perfluorobutanesulfonyl fluoride

  • Abbreviation: PBSF

  • Molecular formula: C₄F₉SO₂F

  • Molecular weight: ~264 g/mol

  • Appearance: Colorless to pale yellow liquid

  • Odor: Pungent, reactive sulfonyl fluoride odor

Key Properties

  • Highly reactive sulfonyl fluoride functional group

  • Moisture-sensitive; reacts with water to form sulfonic acid derivatives

  • Good thermal and chemical stability of the perfluoroalkyl chain

Applications

  • Intermediate for fluorinated sulfonamides and sulfonates

  • Used in pharmaceutical and agrochemical synthesis

  • Specialty chemical intermediate in fluorochemistry and materials science

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