Used as a chiral building block in organic synthesis, particularly in the preparation of pyrrolidine-based pharmaceuticals and bioactive molecules. Its ester groups allow for further functionalization, making it valuable in the development of protease inhibitors, antiviral agents, and other therapeutic compounds. The hydrochloride salt form enhances stability and solubility, facilitating handling in multi-step syntheses. Commonly employed in asymmetric synthesis due to the inherent chirality of the pyrrolidine ring, enabling the production of enantiomerically pure intermediates.