Used as a key building block in medicinal chemistry, particularly in the synthesis of bioactive molecules and drug candidates. Its rigid bicyclopentane core serves as a bioisostere for phenyl or other aromatic rings, improving metabolic stability and solubility in pharmaceuticals. The carboxylic acid and Cbz-protected amine functionalities allow for straightforward coupling and deprotection steps, making it valuable in peptide-like scaffold construction. Commonly employed in the development of protease inhibitors, kinase inhibitors, and other small-molecule therapeutics where enhanced physicochemical properties are required.