Used as a key intermediate in the synthesis of biologically active compounds, particularly in pharmaceuticals and agrochemicals. Its strained bicyclic structure serves as a versatile scaffold for ring-opening reactions, enabling the introduction of functional groups in complex molecule construction. Commonly employed in the development of novel drug candidates where oxygen-containing heterocycles are needed for improved metabolic stability and binding affinity. Also utilized in polymer chemistry as a monomer for specialty resins with enhanced thermal and mechanical properties.