Used as a chiral auxiliary and intermediate in the synthesis of biologically active compounds, particularly in asymmetric synthesis where stereochemical control is critical. Its sulfurothioate group enables selective sulfur transfer reactions, making it valuable in the development of pharmaceuticals, especially antibiotics and enzyme inhibitors. It also finds use in coordination chemistry as a ligand for transition metal catalysts, enhancing enantioselectivity in catalytic reactions. Due to its amino and carboxylic acid functionalities, it can be readily incorporated into peptide-like structures, allowing for the design of modified biomolecules with tailored reactivity.