Used as a key chiral intermediate in the synthesis of antiviral and antiretroviral drugs, particularly in the production of nucleoside analogs. Its stereochemistry enables selective reactions critical for pharmaceutical efficacy. Commonly employed in the development of reverse transcriptase inhibitors. Also utilized in the preparation of biologically active molecules where enantiomeric purity is essential. Serves as a building block in asymmetric synthesis for fine chemicals and medicinal compounds.