Used as a key intermediate in the synthesis of tyrosine kinase inhibitors, particularly in targeted cancer therapies. It plays a role in the development of pharmaceuticals that inhibit abnormal signaling pathways in tumor cells, especially in non-small cell lung cancer and other solid tumors. Its structure allows for strong binding to specific kinase domains, enhancing the potency and selectivity of the final drug compound. Also employed in research settings for structure-activity relationship (SAR) studies to optimize antitumor activity and pharmacokinetic properties.