Used primarily as an intermediate in the synthesis of sulfonamide-based pharmaceuticals. It plays a key role in the preparation of certain antimicrobial and antifungal agents due to its ability to introduce sulfamoyl groups into organic molecules. Its reactivity makes it valuable in the development of biologically active compounds, especially in medicinal chemistry for constructing sulfonamide derivatives with potential therapeutic effects. Also utilized in the production of agrochemicals and dyes where sulfonyl functionalities are required. Requires careful handling due to its moisture sensitivity and potential corrosivity.