Used primarily as an intermediate in the synthesis of sulfonamide-based pharmaceuticals. It plays a key role in the preparation of antimicrobial and anti-inflammatory agents due to its ability to form stable amide and sulfonamide bonds. Commonly employed in the development of dyes and fluorescent probes, especially in research settings where selective sulfonylation is required. Its reactivity makes it valuable for modifying peptides and proteins in biochemical studies. Also utilized in the production of certain agrochemicals and in the fabrication of specialty polymers with enhanced thermal and chemical resistance.