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Fmoc-Sar-Sar-Sar-OH is a protected tripeptide used in peptide synthesis. The Fmoc (9-Fluorenylmethoxycarbonyl) group protects the N-terminus of the first sarcosine (Sar) residue, preventing it from reacting during synthesis. Sarcosine is a non-natural amino acid known for its small size and flexibility. The remaining Sar residues in the sequence are also sarcosines, with all the side chains protected to avoid unwanted reactions. The -OH at the C-terminus indicates a free carboxyl group, allowing for further peptide coupling or modifications. This peptide is utilized for incorporating multiple sarcosine residues into peptides, with specific protections to ensure controlled and efficient synthesis.
