γ-Methylene-γ-butyrolactone is primarily used in the synthesis of various organic compounds, particularly in the field of polymer chemistry. It serves as a key monomer in the production of specialty polymers and copolymers, which are often utilized in coatings, adhesives, and resins due to their excellent thermal stability and mechanical properties. Additionally, it is employed in the development of biodegradable plastics, contributing to environmentally friendly material solutions. In pharmaceutical research, it acts as a building block for creating complex molecules with potential medicinal applications, including drug delivery systems. Its reactivity also makes it valuable in organic synthesis for constructing heterocyclic compounds, which are important in agrochemicals and fine chemicals.