Used as a key chiral intermediate in the synthesis of active pharmaceutical ingredients, particularly in the development of central nervous system (CNS) drugs and antipsychotic medications. Its stereochemistry allows for selective interactions with biological targets, improving drug efficacy and reducing side effects. Commonly employed in medicinal chemistry for constructing complex piperazine-based structures due to its protected functional groups, which enable stepwise derivatization. Also utilized in the preparation of protease inhibitors and receptor agonists/antagonists in research settings.