Used as a chiral intermediate in the synthesis of pharmaceuticals, particularly in the development of central nervous system (CNS) active agents. Its structure supports binding to neurological targets, making it valuable in creating enantiomerically pure drugs for treating depression, anxiety, and other mood disorders. The presence of chlorine and trifluoromethyl groups enhances metabolic stability and bioavailability. Commonly employed in asymmetric synthesis routes where the (S)-configuration is critical for biological activity.