Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its structure enables selective binding to enzyme active sites, making it valuable in drug discovery. Commonly employed in research settings to construct complex heterocyclic systems found in bioactive molecules. Also utilized in the preparation of antiviral agents and anti-inflammatory compounds due to its electron-withdrawing sulfone group and reactive chloro functionality, which allow further chemical modifications.