Used as a chiral building block in pharmaceutical synthesis, particularly in the production of active pharmaceutical ingredients (APIs) where stereochemistry is critical. Its ester groups allow for easy modification and incorporation into larger molecules, making it valuable in asymmetric synthesis. Commonly employed in the development of protease inhibitors and other bioactive compounds due to its ability to mimic natural metabolites. Also utilized in the preparation of intermediates for antiviral and antitumor agents. Its methoxy group enhances solubility and can influence the metabolic stability of the final drug product.