Used primarily as a key intermediate in the synthesis of sulfonamide-based pharmaceuticals and agrochemicals. Its fluorosulfonyl group is highly reactive, enabling efficient sulfonamide bond formation through nucleophilic substitution. Commonly employed in the preparation of bioactive molecules, including protease inhibitors and anti-inflammatory agents. Also utilized in materials science for modifying polymers to enhance thermal stability and chemical resistance. Its reactivity makes it valuable in click chemistry applications, particularly in developing fluorinated compounds for medicinal chemistry research.