Used as a key intermediate in the synthesis of antiviral and anticancer agents, particularly in the development of nucleoside analogs. Its structure supports activity against RNA and DNA viruses by interfering with viral replication. Commonly employed in medicinal chemistry for modifying pyrimidine-based compounds to enhance bioavailability and target specificity. Also utilized in radiolabeling studies due to the presence of iodine, enabling imaging and tracer applications in drug metabolism research.