Used 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 medicinal chemistry for modifying bioactive molecules to enhance their stability and binding properties. Commonly utilized in research settings for the preparation of kinase inhibitors and other biologically active compounds.