Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of central nervous system (CNS) drugs. Its chiral structure makes it valuable in producing enantiomerically pure compounds, which are critical for targeted biological activity. Commonly employed in the preparation of neurokinin antagonists and other neuromodulatory therapeutics. Also utilized in research settings for structure-activity relationship (SAR) studies due to its ability to enhance metabolic stability and blood-brain barrier penetration in drug candidates.