China Copper Peptide(GHK Cu) CAS:89030 95 5 Manufacturers Free Sample Alfa Chemical The Bright and Dark Sides of Reactive Oxygen Species Generated by CopperPeptide Complexes GHK Cu Engage Peptides In peptide research, synergy matters. Some compounds may offer greater insight when studied together, and GHK Cu and AHK Cu are two peptides drawing attention for that reason. Different biological pathways Distinct Your copper peptide product should be this exact blue. If it isn't, you already have your answer. GHK Cu is blue because of coordination chemistry, not dye. The Cu ion at the center