Used as a key chiral intermediate in the synthesis of pharmaceuticals, particularly in the production of selective serotonin reuptake inhibitors (SSRIs) and other central nervous system agents. Its enantiomeric purity makes it valuable for developing active ingredients where stereochemistry impacts drug efficacy and safety. Commonly employed in asymmetric synthesis routes to ensure high optical purity of final drug substances. Also utilized in the preparation of catalysts and ligands for stereoselective reactions in medicinal chemistry research.