(S)-3-Amino-3-(4-nitrophenyl)propanoic acid is primarily used in the field of medicinal chemistry and pharmaceutical research. It serves as a key intermediate in the synthesis of various biologically active compounds, particularly those targeting neurological and cardiovascular diseases. Its chiral structure makes it valuable in the development of enantiomerically pure drugs, enhancing their efficacy and reducing potential side effects. Additionally, it is employed in the study of enzyme inhibition and receptor binding, aiding in the discovery of new therapeutic agents.