Used as an intermediate in the synthesis of biologically active compounds, particularly in the development of sulfonamide-based pharmaceuticals. Its structure allows for selective functionalization, making it valuable in creating enzyme inhibitors and antimicrobial agents. Commonly employed in medicinal chemistry for constructing drug candidates targeting inflammatory and infectious diseases. Also utilized in the preparation of fluorescent probes due to its reactive sulfonyl chloride group, enabling conjugation with amines or alcohols for bioimaging applications.