(S)-Diallyl 2-aminosuccinate 4-methylbenzenesulfonate is primarily utilized in the field of organic synthesis and pharmaceutical research. It serves as a key intermediate in the preparation of chiral compounds, which are essential for developing enantiomerically pure drugs. Its structure allows for the introduction of allyl groups, making it valuable in reactions like allylation, which is crucial for constructing complex molecular architectures. Additionally, it is employed in the synthesis of biologically active molecules, particularly those targeting neurological and cardiovascular disorders. Its chiral nature also makes it useful in asymmetric synthesis, aiding in the production of compounds with high stereochemical purity.