Used primarily as a reactive intermediate in organic synthesis, particularly in the production of specialty polymers and resins. It serves as a building block for cyclic anhydride-based copolymers, which are employed in high-performance coatings and adhesives due to their thermal stability and mechanical strength. Also utilized in the development of biodegradable polyesters and as a crosslinking agent in polymer chemistry. Its strained ring structure enhances reactivity, making it valuable in synthesizing complex cyclic compounds for pharmaceuticals and fine chemicals.