Description
Basic introduction
GHK-Cu is the copper complex of the tripeptide glycyl-L-histidyl-L-lysine. It is used in laboratory work on copper-associated peptide chemistry and connective-tissue responses. The copper complex and the copper-free peptide are related but analytically distinct materials.
Published experiments include animal wound models and measurements of extracellular-matrix components. Such endpoints describe a particular research preparation; they do not demonstrate cosmetic or clinical outcomes for every formulation containing a copper peptide.
Mechanism of action · Research context
Copper complexation
GHK coordinates copper through its peptide structure. Metal occupancy, solution composition and pH are relevant to characterization; an observed blue color is not a substitute for measuring identity or composition.
Extracellular-matrix response
GHK-Cu has been examined in connective-tissue models. A rat wound study measured accumulation of matrix constituents, linking the research question to defined biochemical endpoints rather than appearance alone.
Separating component effects
Copper and peptide controls help interpret a response. Where an assay permits, comparisons with the copper-free peptide and an appropriate copper control distinguish the complex from its individual constituents.
Extended research considerations
Matrix-related measurements
Collagen-associated measurements, cell viability and matrix turnover can change independently. Report the analytical endpoint and normalization method when comparing a study across cell preparations or material lots.
Formulation compatibility
Investigate compatibility in the intended assay medium. Chelators, competing metal ions and medium composition can influence a copper complex, so results obtained in one formulation may not transfer directly to another.
GHK-Cu and AHK-Cu
These copper peptides have different amino-acid sequences. Hair-follicle studies of AHK-Cu should not be relabeled as evidence for GHK-Cu, even though both compounds appear in the same catalog category.
Material and packaging
Listed appearance: Deep Blue Lyophilized Powder.
Available kit specifications: 50 mg × 10 vials; 100 mg × 10 vials. Select an option above to view its current price and availability.
Analytical documentation
Contact us to request analytical documentation for the required material and batch. Confirm the material identity, batch number and test date when reviewing a report.
Scientific references
These publications describe the studied molecules and experimental models. They do not certify the identity, quality or effects of a particular supplied batch.
- GHK-Cu in an experimental connective-tissue model
Rosa I. –
Low-light storage prevents the blue peptide from fading. The lyophilized powder does not absorb ambient humidity, and the reconstituted liquid stays transparent without turbidity after days of refrigeration.
Zane E. –
Storing sealed vials inside an opaque freezer box blocks UV light exposure, the main cause of copper tripeptide fading. The lyophilized blue powder resists moisture absorption completely, and reconstituted liquid never develops cloudiness or precipitates after days of cold storage.