Used as a chiral building block in the synthesis of pharmaceutical intermediates, particularly in the development of bioactive molecules and drug candidates. Its protected amine and ester functionalities allow for selective transformations, making it valuable in peptidomimetics and medicinal chemistry. Commonly employed in the preparation of protease inhibitors and receptor modulators due to the structural stability and stereochemical integrity of the piperazine scaffold. The Cbz-protected piperazine ring enables further coupling reactions in multi-step syntheses, especially in the production of central nervous system agents and anticancer compounds.