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 pharmaceutical compounds that inhibit abnormal protein signaling in tumor cells, especially in non-small cell lung cancer and other solid tumors. Its structure allows for selective binding and modification to enhance drug potency and specificity. Commonly utilized in research and development of novel anticancer agents due to its reactivity and ability to form complex heterocyclic systems.