GHK-Cu

Compound identity

Each row above is attributed to its source. Rows citing a database record are reference information about the molecule; rows marked catalog information describe this listing. Neither is a specification, an analytical result or a claim about any particular batch.

Research classification

Copper(II) complex of a naturally occurring human tripeptide. Widely used as a cosmetic and biomaterials research ingredient; not an approved medicine.

Chemical characteristics

• The histidine imidazole nitrogen, the N-terminal amine and the backbone amide nitrogen provide the coordination environment that binds copper(II), which is what distinguishes GHK-Cu from the free GHK tripeptide.
• The copper complex is coloured, typically deep blue, whereas free GHK is not. Colour is therefore a crude visual indicator of complexation but is not a substitute for analysis.
• Because copper is redox-active, complexes of this type are generally handled with attention to light and oxidising conditions.

Analytical methods

• Reversed-phase HPLC (RP-HPLC) is the method most commonly used to express the chromatographic purity of a synthetic peptide as a percentage of total peak area at a stated wavelength.
• Mass spectrometry (typically ESI-MS or MALDI-TOF) is used to confirm that the observed mass of the material is consistent with the expected mass of the intended sequence.
• Because purity figures are method-dependent, an analytical result is only interpretable alongside the method conditions and the batch it describes.

Both methods are covered in more detail in our guides to HPLC analysis of peptides and mass spectrometry for identity confirmation.

Stability and storage considerations

• Lyophilized peptides are generally supplied as a dry solid because the removal of water slows hydrolytic degradation pathways.
• Cold, dry, light-protected storage is the general handling expectation for lyophilized research peptides.
• Once a peptide is taken into solution, its stability profile changes and is influenced by solvent, pH, temperature and the number of freeze-thaw cycles.
• Storage and handling expectations for a specific batch should be taken from that batch's documentation rather than from general guidance.

See peptide stability and degradation for the chemistry behind these considerations.

Independent Analytical Documentation

We do not currently publish a full independent analytical report on this page for the GHK-Cu listed here. That does not mean documentation is unavailable — it means the report is supplied on request for the batch being fulfilled, rather than attached permanently to a catalog listing that outlives any one batch.

If a report is a requirement for your work, ask before ordering. We will check what Janoshik or other documentation covers the current batch and tell you what it is. Where nothing exists for that batch, we will say so.

Reading the documentation matters as much as having it. Our guides on how to read a peptide certificate of analysis and what a purity figure does and does not mean cover what to look for, and our documentation page explains the request process.

Ordering GHK-Cu in India

GHK-Cu is ordered through the catalog and finalised over WhatsApp or email, so that any question about specification or documentation is settled before the order is placed rather than after it.

Immediate dispatch whenever couriers are operating. Orders from Bangalore are dispatched immediately whenever courier operations are open. Orders from elsewhere in India are dispatched as soon as couriers are operating.

Distribution is within India. Material is supplied for in-vitro research and analytical applications only, and we do not supply for human or veterinary use.

Frequently asked questions

Can I buy GHK-Cu in India from Peptide Tactics?

Yes. GHK-Cu is listed as a 50 mg lyophilized vial with the price shown on this page, available to order for research use within India. It is also searched as GHK Cu, copper peptide or copper tripeptide-1, all of which refer to this listing.

What documentation can I request for GHK-Cu?

You can request whatever documentation exists for the batch being supplied, and we will tell you what that is before you order. Depending on the batch that may be a supplier certificate of analysis or an independent laboratory report. We do not hold a published independent analytical report for the GHK-Cu currently listed and do not claim one. Where documentation does not exist, we say so rather than implying it does.

How quickly are GHK-Cu orders dispatched?

Dispatch is immediate whenever courier services are operating. Bangalore orders take priority in the dispatch queue; orders from elsewhere in India go out as soon as couriers are running, and anything received outside courier hours is dispatched when they reopen. We do not quote a delivery date, because transit time is the courier's and not ours.

Can you source a peptide that is not listed?

Yes. Our catalog is what we currently hold, not the limit of what we can look into. Send the compound name, quantity and any specification that matters — salt form, purity threshold, documentation requirement — and we will investigate sourcing options and tell you what is possible, what it would cost and what documentation exists.

Is GHK-Cu intended for human use?

No. Everything in this catalog is supplied for in-vitro research and analytical applications only, and not for human or veterinary use. We do not provide dosing, administration guidance or any therapeutic recommendation, and we cannot supply material for those purposes.

What is the molecular weight of GHK-Cu?

There is no single correct answer, because the figure depends on what is being described. The free tripeptide GHK is recorded in PubChem as C14H24N6O4 at 340.38 g/mol (CID 73587). The 1:1 copper complex is recorded as prezatide copper, C14H23CuN6O4+ at 402.92 g/mol (CID 71587328). A real preparation may also be supplied as a salt, in which case counter-ions add further mass that neither record accounts for. Peptide Tactics has not established the stoichiometry or copper loading of the material supplied under this listing, so no single figure is quoted for it here.

What is GHK-Cu?

GHK-Cu is the copper(II) complex of glycyl-L-histidyl-L-lysine, a naturally occurring human tripeptide. It is also referred to as copper tripeptide-1 or prezatide copper.

Why do sources report different molecular weights for GHK-Cu?

Because the complex is recorded in chemical databases under several stoichiometric representations. The free GHK tripeptide is 340.38 g/mol; the 1:1 copper cation is recorded at 402.92 g/mol; other entries describe 2:2 forms with correspondingly higher masses.

Is GHK-Cu the same as GHK?

No. GHK is the tripeptide on its own. GHK-Cu is that tripeptide bound to copper(II). They are chemically distinct and behave differently in analysis and handling.

Sources

• PubChem CID 73587 — glycyl-L-histidyl-L-lysine (GHK)
• PubChem CID 71587328 — prezatide copper (GHK-Cu)
• Pickart L. The human tri-peptide GHK and tissue remodeling. Journal of Biomaterials Science, Polymer Edition, 2008 (PMID 18644225)

Related compounds

Further reading

• What are peptides? — A peptide is a chain of amino acids joined by amide bonds.
• Peptide stability and degradation — Peptides degrade by a small number of well-characterised chemical routes.
• Peptide purity explained — A purity percentage on its own carries less information than it appears to.