Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in the production of targeted therapies, including drugs that modulate epidermal growth factor receptor (EGFR) activity. Its structure allows for functionalization at multiple sites, enabling the creation of derivatives with enhanced biological activity and selectivity. Commonly employed in medicinal chemistry research for optimizing drug candidates in oncology and inflammatory diseases.