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 nucleophiles, enabling the formation of sulfonamides and sulfonate esters that are important in active ingredient design. Commonly employed in the preparation of pyrazole-based compounds with biological activity, including kinase inhibitors and anti-inflammatory agents. Also utilized in crop protection chemistry to enhance the efficacy and selectivity of modern pesticides.