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Boc-His(Trt)-Gln(Trt)-Gly-OH is a protected tripeptide used in peptide synthesis. The Boc (tert-Butoxycarbonyl) group protects the N-terminus of the histidine (His) residue, preventing premature reactions during synthesis. The side chain imidazole group of histidine and the amide group of glutamine (Gln) are protected by Trt (Trityl) groups, shielding these functional groups until selective deprotection is required. Gly (Glycine), the final amino acid in the sequence, has a free carboxyl group at the C-terminus, indicated by -OH, which allows for further peptide coupling or modifications. This compound is used to introduce histidine, glutamine, and glycine into peptides, with controlled protection of functional groups to ensure efficient and precise peptide synthesis.
