Used as an intermediate in pharmaceutical synthesis, particularly in the development of active pharmaceutical ingredients (APIs) that require piperidine-based structures. The tert-butoxycarbonyl (Boc) group protects the amine, allowing for selective reactions in multi-step organic syntheses. Commonly employed in the preparation of central nervous system (CNS) agents, including antidepressants, antipsychotics, and cognitive enhancers. The benzyl ether group provides stability during reactions and can be removed selectively to reveal hydroxyl functionality when needed. Also utilized in the synthesis of protease inhibitors and receptor ligands due to its conformational rigidity and biocompatibility.