Used primarily as a monomer in the synthesis of specialty polymers and copolymers, particularly in cyclic olefin copolymers (COCs). These materials exhibit high transparency, low birefringence, and excellent moisture resistance, making them suitable for optical applications such as lenses, displays, and medical devices. Also employed in the production of high-performance resins and coatings where thermal stability and mechanical strength are required. Its rigid norbornene structure contributes to the glass transition temperature and dimensional stability of the resulting polymers. Additionally, it serves as an intermediate in organic synthesis, especially in Diels-Alder reactions and epoxy resin modification to enhance crosslinking and performance under harsh conditions.