Migration and matrix
GHK-Cu
Also listed as Copper tripeptide-1, Prezatide copper, GHK copper
Copper(II) tripeptide complex
- Cu(II) binding
- ECM gene expression
- Formula
- Not quoted
- Molar mass
- Not quoted
- CAS number
- 89030-95-5
Identity
What the molecule is, from its PubChem record. These are the figures a certificate of analysis should agree with.
- Class
- Copper(II) tripeptide complex
- Sequence
H-GHK-OH · Cu(II)
- The tripeptide Gly-His-Lys with one copper(II) ion bound.
- Molecular formula
- Not quoted See note
- Molar mass
- Not quoted See note
- CAS number
- 89030-95-5
- PubChem
- CID 71587328
PubChem files the copper complex under several records that differ in charge state (for example C14H23CuN6O4⁺ in CID 71587328 and C14H22CuN6O4 in CID 165429100), so we don’t quote one formula or mass. The peptide on its own, GHK, is C14H24N6O4 at 340.38 g/mol (CID 73587).
Checked against PubChem on 27 September 2026. Molar mass is calculated from the formula with standard atomic weights and agrees with PubChem’s published molecular weight. In sequences, H- marks a free N-terminus, -OH a free C-terminal acid and -NH₂ a C-terminal amide.
Research context
GHK-Cu is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine, which binds copper with high affinity. It is studied for its copper-binding chemistry and, in fibroblast cell culture, for changes in collagen and extracellular-matrix gene expression.
Research use only. Everything on Vialwise concerns research-grade material sold for laboratory and analytical use only. It is not a registered medicine, is not supplied for human or veterinary use, and nothing here is medical advice.
Storage and handling
Store sealed lyophilised powder at −20 °C, dry and away from light.
Let the vial reach room temperature before opening, so moisture doesn’t condense on the powder.
The powder and its solutions are blue from the bound copper. Keep chelating agents such as EDTA out of the solvent, because they strip the copper from the peptide.
Split the solution into single-use aliquots and keep them frozen, so no portion goes through repeated freeze–thaw.
General laboratory practice for this class of material; your institution’s own procedures come first. To work out concentration and aliquot volumes from a vial’s mass, use the reconstitution calculator. For the reasoning behind each step, read storing lyophilised peptides.
Published lab reports
Lab reports for GHK-Cu at Au Peptide Labs Our store
The one supplier whose full report list we have.
Open each lab-linked report on the lab’s own website to confirm it.
- Lab link
GHK-Cu
Task #149239Added 31 July 2026
Verify at janoshik.com99.490%purity
Other suppliers publish their reports on their own sites. Where each supplier publishes its COAs
Vialwise is published by APL Research Pty Ltd, which also runs Au Peptide Labs. Every supplier, ours included, is scored on the same published checklist. How we handle this
Any supplier
Check any supplier’s GHK-Cu COA
These checks take a few minutes and work the same on a report from any supplier, ours included. The walkthrough shows each one on a real Janoshik report.
How to verify a Janoshik COAOpen it at the lab
The report should load on the testing lab’s own website from the verify link or task number, not only as a PDF or screenshot from the supplier.
Match the name
The sample should be named GHK-Cu, Copper tripeptide-1 or Prezatide copper, or a clear equivalent. A different compound name means a different report.
Match the mass
If the report includes a mass-spectrometry result, compare it with the PubChem record for the exact form the supplier names. How HPLC and mass spec work.
Match the vial
The sample amount on the report should match the vial size you’re buying. A report on a different size or an older batch tells you less about the vial in front of you.
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