Used as an intermediate in the synthesis of sulfonamide-based pharmaceuticals, particularly in the development of antimicrobial and anti-inflammatory agents. Its reactive sulfonyl chloride group allows for easy coupling with amines to form sulfonamides, which are key structural motifs in many drug compounds. Also employed in agrochemical synthesis for creating herbicides and plant growth regulators. The acetylamino group enhances stability during reactions, making it valuable in multi-step organic syntheses.