Used primarily as a key intermediate in the synthesis of agrochemicals and pharmaceuticals, particularly in the preparation of sulfa drugs and herbicides. Its fluorinated aromatic structure enhances reactivity and stability in coupling reactions, making it valuable in the development of fluorinated organic compounds. It serves as a sulfonylating agent in the formation of sulfonamides, which are important motifs in drug design due to their biological activity and metabolic stability. Also employed in materials science for modifying polymer properties through controlled functionalization. Requires careful handling due to high reactivity with moisture and nucleophiles.