Used as an intermediate in organic synthesis, particularly in the preparation of sulfonamide-based pharmaceuticals. It serves as a building block for introducing the benzenesulfonyl group in drug molecules, enhancing metabolic stability and binding affinity. Commonly employed in the development of bioactive compounds, including protease inhibitors and receptor antagonists. Its bromomethyl functionality allows for further alkylation or coupling reactions, making it valuable in medicinal chemistry for constructing complex molecular architectures.