Used primarily as an intermediate in the synthesis of agrochemicals and pharmaceuticals. It plays a key role in the production of certain neonicotinoid insecticides, which are effective against a broad spectrum of insect pests in crops. The sulfonyl chloride group allows for easy derivatization, making it valuable in constructing sulfonamide linkages found in biologically active compounds. It is also employed in the development of novel heterocyclic compounds for crop protection research due to its reactivity and structural features.