Used as a key intermediate in the synthesis of antiviral and pharmaceutical compounds, particularly in the development of nucleoside analogs. Its strained oxetane ring enhances metabolic stability and bioavailability in drug candidates. Commonly employed in medicinal chemistry for structure-activity relationship studies, especially in optimizing potency and pharmacokinetic properties. Also utilized in the preparation of functionalized building blocks for drug discovery programs targeting viral polymerases and other enzymes.