Used primarily as an intermediate in organic synthesis, especially in the development of pharmaceuticals and agrochemicals. Its structure allows for selective functionalization in ring systems, making it valuable in the preparation of sulfonamide-based bioactive compounds. It is also employed in the synthesis of protease inhibitors and other therapeutic agents where sulfonamide moieties are critical for activity. Additionally, it serves as a building block in the creation of novel ligands for catalysis and in the design of compounds for medicinal chemistry research.