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Cbz-Ser(OtBu)-Asp(OtBu)-Tyr(OtBu)-OH is a protected tripeptide used in peptide synthesis. The peptide consists of serine (Ser), aspartic acid (Asp), and tyrosine (Tyr) residues. The Cbz (Carbobenzyloxy) group protects the N-terminus of the serine residue, while the OtBu (tert-butyl) groups protect the hydroxyl and carboxyl side chains of the serine, aspartic acid, and tyrosine residues, preventing them from participating in unwanted side reactions during synthesis. The C-terminus of the tyrosine residue is free, indicated by -OH, allowing for further coupling or deprotection. This protected tetrapeptide is designed to be incorporated into larger peptide sequences in a controlled manner, ensuring selective reactivity and stability throughout the synthesis process.
