Used primarily as an intermediate in the synthesis of pharmaceuticals, especially in the development of fluorinated active pharmaceutical ingredients (APIs) where the fluorine atom enhances metabolic stability and bioavailability. Its sulfonyl chloride group readily reacts with amines and alcohols, making it valuable for constructing sulfonamide and sulfonate ester linkages commonly found in bioactive molecules. It is also employed in agrochemical synthesis to build herbicides and fungicides, leveraging the electron-withdrawing fluoro and sulfone groups to fine-tune compound reactivity and target specificity. Additionally, it serves as a building block in materials science for creating specialty polymers with improved thermal and oxidative resistance.