Used as an intermediate in the synthesis of antiviral drugs, particularly in the development of nucleoside analogs. These analogs are designed to inhibit viral replication by mimicking natural nucleosides, thereby interfering with viral RNA or DNA synthesis. It plays a key role in the production of medications targeting viruses such as HIV, hepatitis B, and hepatitis C. Its stereochemistry is critical for biological activity, ensuring proper binding to viral polymerases. Commonly utilized in pharmaceutical research and development for creating more effective and selective antiviral agents.