Used as a key intermediate in the synthesis of tyrosine kinase inhibitors, particularly in targeted cancer therapies. It plays a critical role in the development of pharmaceuticals that inhibit abnormal protein signaling in tumor cells, especially in non-small cell lung cancer and other solid tumors. Its structure allows selective binding to epidermal growth factor receptor (EGFR), making it valuable in creating drugs that block cancer cell proliferation and promote apoptosis. Commonly utilized in research and industrial settings for developing potent, orally active anticancer agents.