Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity. Its structure supports the formation of complex molecules in medicinal chemistry, especially in the creation of protease inhibitors and other biologically active compounds. Commonly employed in research and development for drug discovery due to its ability to enhance selectivity and potency in target molecules. Also utilized in asymmetric synthesis to introduce chirality, improving the efficacy and safety profile of new drugs.