ghk-cu copper coordination structure geometry square-pyramidal Square planar versus square pyramidal copper(II) complexes containing N3O moiety: Synthesis, structural characterization, kinetic and catalytic mimicking activity GHK-Cu Research Peptide 50-120 MG cyanocobalamin Size:Copper Peptide Bundle ( 1 gram GHK+ 1 gram AHK) hospira bac water pfizer
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