Methylenecyclopentane is primarily used in organic synthesis as a building block for more complex chemical structures. Its unique cyclic structure with a methylene group makes it valuable in the production of specialty chemicals, including polymers and pharmaceuticals. In polymer chemistry, it can serve as a monomer or comonomer to create materials with specific properties, such as enhanced flexibility or thermal stability. Additionally, it is utilized in research and development for the synthesis of novel organic compounds, particularly in the study of ring-opening reactions and cycloaddition processes. Its reactivity and structural features also make it a useful intermediate in the preparation of fine chemicals and active pharmaceutical ingredients (APIs).