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 selective binding to mutant forms of epidermal growth factor receptor (EGFR), making it valuable in creating drugs with improved efficacy and reduced side effects. Commonly utilized in research and development of next-generation oncology treatments.