Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of sulfonamide-based drugs with antimicrobial and antidiabetic properties. It plays an important role in the preparation of heterocyclic compounds due to its reactive sulfonyl chloride group, which readily forms sulfonamides and sulfonate esters. Commonly employed in medicinal chemistry for modifying bioactive molecules to enhance their stability, solubility, or target specificity. Also utilized in agrochemical research for designing novel pesticides and herbicides with improved efficacy. Its ability to participate in coupling reactions makes it valuable in the development of functional materials and dyes.