Primarily used in the synthesis of pharmaceuticals, this compound acts as a key intermediate in the production of active pharmaceutical ingredients (APIs). Its chlorosulfonyl group makes it reactive, enabling it to participate in various chemical reactions to form complex drug molecules. It is particularly valuable in the development of anti-inflammatory and analgesic drugs, where its structure contributes to the efficacy of the final product. Additionally, it finds application in organic synthesis for creating specialized chemicals used in research and industrial processes.