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 Intermediate Cu(II) Thiolate Species in the Reduction of Cu(II)GHK by Glutathione: A Handy Chelate for Biological Cu(II) Reduction Inorganic Chemistry China Copper Tripeptide 1 GHK Cu 89030 95 5,Buy Copper Tripeptide 1 GHK Cu 89030 95 5 Online china sinoway.com Buy GHK Cu 100mg Online (Copper Peptide) 99% Purity
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