H- (Gly) 3-Lys (N3) -OH

H- (Gly) 3-Lys (N3) -OH is a chemical reagent featuring an azide group prominently used in click chemistry for coupling with alkyne-containing fragments. Azides are extensively utilized for this purpose due to their effectiveness in such reactions. A polyglycine segment containing up to seven glycine residues has been reported to bind to surfaces, demonstrating potential applications in nanostructures; specifically, the Gly7-NHCH2 peptide segment binds to mica surfaces in aqueous solutions.