Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly kinase inhibitors. It serves in the development of targeted cancer therapies due to its ability to selectively modify enzyme activity involved in cell signaling pathways. Its structure allows for efficient coupling reactions in medicinal chemistry, making it valuable in creating analogs for drug discovery. Commonly employed in the preparation of potent antitumor agents and antiviral drugs through functionalization at the bromo and chloro sites.