Z-Phe-NH2 is widely used in peptide synthesis as a building block for creating more complex peptide structures. It serves as a protected form of phenylalanine, where the Z-group (benzyloxycarbonyl) protects the amino group during the synthesis process. This protection is crucial to prevent unwanted side reactions and ensure the correct sequence of amino acids in the final peptide. It is particularly valuable in solid-phase peptide synthesis (SPPS) and solution-phase synthesis, where selective deprotection and coupling steps are required. Additionally, Z-Phe-NH2 is utilized in research to study enzyme-substrate interactions, peptide folding, and biochemical pathways, making it a key reagent in both synthetic and analytical chemistry.