Used primarily as a key intermediate in the synthesis of agrochemicals and pharmaceuticals, particularly in the development of herbicides and fungicides. Its sulfonyl chloride group readily reacts with amines and alcohols, making it valuable for constructing sulfonamide and sulfonate ester derivatives. It is also employed in the preparation of sulfonamide-based bioactive molecules, including kinase inhibitors and other medicinal agents. Due to the electron-withdrawing trifluoromethyl and bromo substituents, it enhances reactivity in cross-coupling reactions, supporting its use in advanced organic synthesis and drug discovery.