Used as a key intermediate in the synthesis of tyrosine kinase inhibitors, particularly in the development of anticancer agents. Its structure allows for selective modification to enhance binding affinity to enzyme targets involved in tumor growth. Commonly employed in pharmaceutical research for optimizing drug candidates targeting epidermal growth factor receptor (EGFR) pathways. Also utilized in radiolabeling studies due to the presence of iodine, enabling imaging and biodistribution analysis in preclinical models.