Used as a chiral building block in the synthesis of pharmaceutical intermediates, particularly in the development of active pharmaceutical ingredients (APIs) requiring stereochemical control. Its protected amine group and piperazine core make it valuable in constructing complex molecules for drug discovery, especially in central nervous system agents, kinase inhibitors, and metabolic disorder treatments. Commonly employed in coupling reactions to introduce a functionalized piperazine moiety while maintaining enantiomeric purity.