Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where stereochemistry plays a critical role in biological activity. Its structure makes it valuable in creating enantiomerically pure compounds, especially in central nervous system agents and anti-inflammatory drugs. Commonly employed in asymmetric synthesis and catalysis due to the presence of the chiral amine functionality, it enables the formation of complex molecules with high selectivity. Also utilized in the preparation of fluorinated analogs in medicinal chemistry to enhance metabolic stability and membrane permeability.