(S)-2-Bromo-3-phenylpropionic acid is primarily used as a chiral building block in organic synthesis, particularly in the production of pharmaceuticals and fine chemicals. Its stereochemistry makes it valuable for creating enantiomerically pure compounds, which are essential in drug development to ensure efficacy and reduce side effects. It is often employed in asymmetric synthesis and as an intermediate in the synthesis of bioactive molecules, such as inhibitors or receptor modulators. Additionally, it can be utilized in peptide chemistry for the modification of amino acids or peptides, enhancing their biological activity or stability. Its applications extend to material science, where it can be used to design chiral polymers or catalysts.