Used as an intermediate in organic synthesis, particularly in the preparation of sulfa drugs and other biologically active compounds. It serves as a key reagent in the development of pharmaceuticals with antimicrobial and anti-inflammatory properties. Its hydroxyl and sulfonyl functional groups enable participation in condensation and coupling reactions, making it valuable in medicinal chemistry for constructing heterocyclic systems. Also employed in research settings to design enzyme inhibitors and in the synthesis of novel sulfonamide derivatives for drug discovery.