Used primarily as an intermediate in the synthesis of sulfonamide-based pharmaceuticals, particularly herbicides and certain antimicrobial agents. It plays a key role in introducing the sulfamoyl group into organic molecules, enhancing their biological activity. Commonly employed in agrochemical manufacturing for developing sulfonylurea herbicides, which inhibit plant amino acid synthesis. Also utilized in research settings for constructing novel bioactive compounds due to its reactivity with amines and alcohols. Requires careful handling due to its moisture sensitivity and potential to release hydrogen chloride upon decomposition.