Ingredient or product comparison
GHK-Cu Peptide Same as GHK-Cu: Comparison
The table below clarifies the relationship between nomenclature variants and the underlying molecular identity of GHK-Cu, addressing common points of confusion about whether different product labels indicate different compounds. GHK-Cu Gly-His-Lys tripeptide c
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- The table below clarifies the relationship between nomenclature variants and the underlying molecular identity of GHK-Cu, addressing common points of confusion about whether different product labels indicate different compounds.
- GHK-Cu
- Gly-His-Lys tripeptide coordinated to Cu²⁺; 340 Da; 1:1 stoichiometry
- Research literature, biochemical databases, technical documentation
- SPPS + controlled copper complexation at pH 6.5–7.5
- This is the standard nomenclature in peer-reviewed research. No functional difference from 'GHK-Cu Peptide', just shorter
- GHK-Cu Peptide
- Identical: Gly-His-Lys tripeptide coordinated to Cu²⁺; 340 Da; 1:1 stoichiometry
- E-commerce listings, cosmetic ingredient labels, vendor product pages
- 'Peptide' is a descriptor clarifying compound class. The molecule is identical to 'GHK-Cu' without the label
- Copper Tripeptide-1
- INCI (International Nomenclature of Cosmetic Ingredients) name for cosmetic formulations
- INCI naming system for cosmetic labels. Same compound, regulatory naming convention differs from research nomenclature
- GHK + Copper Salts (Uncomplexed)
- Free GHK peptide + ionic copper (CuSO₄ or CuCl₂). NOT a coordination complex
- Low-quality formulations, poorly synthesized products
- Physical mixture without coordination chemistry
- This is NOT the same as GHK-Cu. Bioavailability and activity are 3–5× lower because copper is not chelated to the peptide