Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of antiviral and anticancer agents. Its structure supports the formation of pyrimidine-based compounds, which are key in nucleoside analogs. Commonly employed in medicinal chemistry for modifying bioactive molecules to enhance stability, solubility, or binding affinity. Also utilized in the preparation of prodrugs due to its ability to form ester or amide derivatives that improve cellular uptake.