Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of sulfonamide-based drugs. It enables the introduction of sulfonyl functional groups into organic molecules, enhancing their biological activity. Commonly applied in the preparation of antidiabetic, antimicrobial, and anti-inflammatory agents. Also utilized in agrochemical synthesis for creating novel pesticides and herbicides. Its reactivity makes it valuable in forming sulfonate esters and sulfonamides in research and industrial settings.