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 is critical for optimal biological activity and reduced side effects in final drug products. Commonly employed in asymmetric synthesis routes where the (S)-configuration enhances binding affinity to specific neurotransmitter targets. Also utilized in the development of adrenergic and dopaminergic compounds for treating depression, anxiety, and neurodegenerative disorders.