Z-4-Fluoro-Phe-OH is primarily utilized in the field of peptide synthesis, where it serves as a building block for creating modified peptides. Its incorporation into peptide chains can enhance the stability and biological activity of the resulting peptides, making it valuable in drug development and biochemical research. The fluorine atom in its structure can influence the peptide's interaction with biological targets, potentially improving binding affinity or selectivity. This compound is also used in studies exploring the effects of fluorinated amino acids on protein structure and function, aiding in the design of novel therapeutics and biomaterials.