Used as a key chiral intermediate in the synthesis of pharmaceutical agents, particularly in the development of selective serotonin reuptake inhibitors (SSRIs) and other central nervous system (CNS) active compounds. Its stereochemistry enables high enantioselectivity in drug synthesis, improving efficacy and reducing side effects. The silyl protecting group allows for selective functionalization during multi-step reactions, making it valuable in advanced organic synthesis for building complex drug molecules. Commonly employed in research and development of novel antidepressants and anxiolytics.