Used primarily as an intermediate in organic synthesis, especially in peptide chemistry. It serves as a protected form of phenylglycine, enabling controlled assembly of peptide chains without unwanted side reactions. The benzyloxycarbonyl (Cbz) group allows for selective deprotection under mild conditions, making it valuable in stepwise peptide synthesis. Commonly employed in the preparation of antibiotics, enzyme inhibitors, and other biologically active molecules where precise amino acid sequencing is required. Its stability under various reaction conditions enhances its utility in multi-step synthetic routes.