Used as an intermediate in the synthesis of biologically active compounds, particularly in pharmaceuticals and agrochemicals. Its sulfonyl chloride group readily reacts with amines and alcohols, making it valuable for constructing sulfonamide and sulfonate ester derivatives. It is employed in the development of kinase inhibitors and other targeted therapies in medicinal chemistry. Also utilized in research settings for the preparation of pyrazole-containing compounds that exhibit potential antimicrobial, anti-inflammatory, or anticancer activities.