Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring stereochemical control. Its primary application lies in the production of central nervous system (CNS) agents, including antidepressants and antipsychotics, where the (S)-enantiomer contributes to desired biological activity. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its rigid piperidine scaffold and functional handles for derivatization. Also utilized in the preparation of enzyme inhibitors and receptor agonists/antagonists, especially targeting GPCRs and kinases. Suitable for solid-phase and solution-phase peptide-like synthesis in drug discovery.