Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of antiviral and antidiabetic drugs. Its chiral structure makes it valuable for creating enantiomerically pure compounds, which are critical for drug efficacy and safety. Commonly employed in the preparation of protease inhibitors and other bioactive molecules where precise stereochemistry is required. The bis(tosylate) form enhances stability and crystallinity, facilitating purification and handling during large-scale manufacturing.