Used as a key intermediate in the synthesis of kinase inhibitors, particularly in the development of anticancer agents. Its structure allows selective modification to target specific protein kinases involved in tumor growth and signal transduction pathways. Commonly employed in medicinal chemistry for optimizing potency and selectivity in drug candidates, especially in tyrosine kinase and Aurora kinase inhibitor programs. Also utilized in radiolabeled forms for imaging and biodistribution studies due to the presence of iodine, enabling tracking in biological systems.