Widely used in organic synthesis as a sulfonylating agent, particularly in the preparation of sulfonamides. It reacts with amines to form sulfonamide derivatives, which are key intermediates in pharmaceuticals and agrochemicals. Its bromine substituents allow for further functionalization via cross-coupling reactions such as Suzuki or Heck reactions, making it valuable in the development of complex aromatic compounds. Commonly employed in medicinal chemistry for scaffold diversification and in the synthesis of bioactive molecules.