Used as an intermediate in the synthesis of epidermal growth factor receptor (EGFR) inhibitors, particularly in the development of anticancer agents. Its structure allows for selective modification of quinazoline-based compounds that target tyrosine kinase activity in tumor cells. Commonly employed in pharmaceutical research for optimizing drug candidates aimed at non-small cell lung cancer and other EGFR-driven cancers. Suitable for coupling reactions to introduce piperidine-linked quinazoline scaffolds in active pharmaceutical ingredients.