Used as a key chiral intermediate in the synthesis of active pharmaceutical ingredients, particularly in the production of selective serotonin reuptake inhibitors (SSRIs) and other central nervous system (CNS) agents. Its stereochemistry plays a critical role in ensuring high enantiomeric purity of the final drug product, which enhances efficacy and reduces side effects. Commonly employed in asymmetric synthesis routes where the amine functionality allows for coupling reactions to form amides or heterocyclic structures. Also utilized in the development of agrochemicals and specialty polymers requiring optically active building blocks.