Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antiviral and anticancer agents. Its structure allows for selective modifications, making it valuable in medicinal chemistry for creating pyrimidine-based drug candidates. Commonly employed in nucleoside analog synthesis where the iodine moiety facilitates coupling reactions such as Suzuki or Heck reactions, enabling the introduction of aromatic or heteroaromatic groups. Also utilized in research settings for labeling and tracer studies due to the presence of iodine, which can be easily detected or radio-labeled.