Used as a key intermediate in the synthesis of fluorinated organic compounds, particularly in pharmaceuticals and agrochemicals. Its fluorosulfonyl group enables selective sulfonamide or sulfonate formation, useful in drug development for modifying bioavailability and metabolic stability. Commonly employed in the preparation of PET imaging agents due to the presence of fluorine, facilitating radiolabeling with fluorine-18. Also applied in materials science for creating specialty polymers with enhanced thermal and chemical resistance.