Used primarily in organic synthesis as a versatile reagent for introducing the (4-bromophenyl)methanesulfonyl group into molecules. It is commonly employed in the preparation of sulfonamides, which are valuable intermediates in pharmaceutical and agrochemical research. The compound is particularly useful in modifying peptides and proteins, enhancing their stability or altering their biological activity. Additionally, it serves as a key building block in the development of potential drug candidates, especially in the synthesis of compounds targeting specific enzymes or receptors. Its reactivity with amines and alcohols makes it a valuable tool in creating diverse chemical libraries for screening purposes.