This compound is primarily utilized in peptide synthesis as a protecting group for tryptophan residues. It helps prevent unwanted side reactions during the formation of peptide bonds, ensuring the integrity of the peptide chain. The Z-group (benzyloxycarbonyl) provides stability under various reaction conditions, while the OSu (N-hydroxysuccinimide ester) moiety enhances reactivity, facilitating efficient coupling with amino acids or peptides. It is particularly valuable in solid-phase peptide synthesis (SPPS) and solution-phase methods, where precise control over the sequence and structure of peptides is critical. Its application extends to the production of bioactive peptides, pharmaceuticals, and research-grade peptides for biochemical studies.