Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules requiring stereochemical control. Its protected amine and piperidine scaffold make it valuable in drug discovery for central nervous system agents, kinase inhibitors, and other therapeutic targets. The tert-butyloxycarbonyl (Boc) group allows for selective amine protection during peptide coupling or heterocycle formation, while the hydrochloride salt enhances stability and crystallinity for easier handling in solid-phase synthesis. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its conformational rigidity and ability to mimic natural amino acid motifs.