Used as an intermediate in the synthesis of targeted cancer therapies, particularly in the development of tyrosine kinase inhibitors. It plays a role in blocking signaling pathways that promote tumor growth, especially in non-small cell lung cancer and other solid tumors. Its structure allows selective inhibition of epidermal growth factor receptor (EGFR) mutants, including those resistant to earlier generations of inhibitors. This compound contributes to improved potency and selectivity in next-generation oncology drugs.