Used as a key building block in medicinal chemistry, particularly in the design of bioactive molecules and pharmaceuticals. Its rigid bicyclopentane structure acts as a three-dimensional substitute for traditional flat aromatic rings, improving metabolic stability and solubility in drug candidates. Commonly employed in the development of CNS drugs, kinase inhibitors, and PET radiotracers due to its favorable physicochemical properties and ability to modulate lipophilicity. Also utilized in materials science for creating high-performance polymers with enhanced thermal and mechanical stability.