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Cbz-Sar-Sar-OH is a peptide building block used in peptide synthesis. It features a Cbz (Carbobenzyloxy) protective group on the N-terminus, which prevents unwanted reactions during the peptide assembly process. The core structure includes two Sar (Sarcosine) residues, a small amino acid derivative with a methyl group replacing one hydrogen, which contributes to flexibility and hydrophobic interactions. The -OH at the C-terminus denotes a free carboxyl group, allowing for coupling with other amino acids. This compound is used to introduce specific dipeptide sequences into peptides, modifying their structural and functional properties.
