Used as a chiral building block in organic synthesis, particularly in the pharmaceutical industry for the preparation of enantiomerically pure compounds. It serves as an intermediate in the synthesis of active pharmaceutical ingredients (APIs) where stereochemistry plays a critical role in drug efficacy and safety. Its structure allows for selective reactions in asymmetric synthesis, making it valuable in the development of complex molecules. Commonly employed in peptide coupling and as a reagent in nucleoside and nucleotide chemistry. Also utilized in the preparation of catalysts and ligands for stereoselective transformations.