GHK-Cu 50mg
£21.99 per vial · Peptides · Research use only
Only 2 left
About GHK-Cu 50mg
GHK-Cu 50mg is a copper complex of the tripeptide glycyl-L-histidyl-L-lysine, supplied as lyophilised powder in a single vial for in-vitro laboratory research.
Product specifications
- Compound
- GHK-Cu
- Declared content
- 50mg per vial
- Format
- Lyophilised powder
Batch documentation
The current published lot is IP-GHK50-002. The batch record from Janoshik Analytical (CZ), dated 24 August 2026, lists reported purity of 99.728% (RP-HPLC) and measured content of 51.10 mg/vial (GHK 42.52 mg · Cu 8.58 mg).
View the certificate of analysis →
Intended use
For in-vitro laboratory research only. Not for human or veterinary use.
Technical notes and further reading
- CAS number
- 89030-95-5
- Molecular formula
- C14H22CuN6O4
- Molecular weight
- 401.9 g/mol
- Sequence
- Gly-His-Lys
Specification
| SKU | CU50 |
|---|---|
| Compound | GHK-Cu |
| Price | £21.99 per vial |
| Format | 50mg per vial |
| Availability | In stock |
| CAS number | 89030-95-5 |
| Molecular formula | C14H22CuN6O4 |
| Molecular weight | 401.9 g/mol |
| Sequence | Gly-His-Lys |
| Published batch / lot | IP-GHK50-002 |
| Reported purity | 99.728% (RP-HPLC) |
| Measured content | 51.10 mg/vial (GHK 42.52 mg · Cu 8.58 mg) |
| Identity status | LC-MS identity result not published |
| Tested by | Janoshik Analytical (CZ) |
| Report date | 2026-08-24 |
| Storage | Lyophilised: −20 °C, protect from light |
| Certificate of analysis | Published for lot IP-GHK50-002 — download it from this page, or request a copy |
| Intended use | In-vitro laboratory research only |
GHK-Cu 50mg copper peptide: UK research supply
This GHK-Cu listing is a 50mg lyophilised copper peptide for laboratory research. Check the batch identity, purity result and labelled quantity when comparing copper peptide suppliers. The product's published COA and batch verification record let you review the documentation before placing a UK order.
What does the research on GHK-Cu investigate?
GHK-Cu is not a peptide in the ordinary sense but a coordination complex: the tripeptide glycyl-L-histidyl-L-lysine bound to a copper(II) ion, one to one. The colour is the first clue that something different is going on - the complex is a deep blue solid, and that colour comes from electronic transitions in the copper centre, not from the peptide. This matters practically because the copper is held by the histidine residue and can be displaced. Introduce a stronger chelator such as EDTA, or a pH the complex does not tolerate, and the copper leaves, the blue fades and what remains is the free peptide plus copper in solution. Any measurement made on the material afterwards is a measurement of something else. The published research uses the complex in studies of copper handling and coordination in cell culture, where the metal centre is the point of the molecule rather than an accessory to it. This page describes the material and its documentation only.
Who can buy GHK-Cu?
GHK-Cu is supplied strictly as a research chemical for in-vitro laboratory research. Products are sold exclusively to qualified researchers and licensed laboratories.
At checkout the buyer confirms that they are 18 or over, are buying in the course of research, and are responsible for handling, storing and disposing of the material in line with their laboratory's procedures. GHK-Cu is not for human or veterinary use.
We only answer questions about specifications, documentation and orders.
How are identity and quality assured?
Each released lot is tested and the result is published, rather than the material being described as high purity on the strength of a supplier's word. Purity is measured by reversed-phase HPLC at an independent laboratory. The laboratory used for every lot published so far is Janoshik Analytical, in the Czech Republic, and the result is stated alongside the measured content against label so the two can be read together.
The report carries the lot number printed on the vial, which is the part that matters. A certificate showing a result without a lot number cannot be tied to the vial in front of you, and a certificate for a different lot tells you nothing about yours. Matching the printed number on the label to the number on the report is a five second check and it is the whole point of publishing both.
Identity confirmation by mass spectrometry is a separate test and is ordered as an add-on, so the figures published here come from RP-HPLC purity testing unless a report says otherwise. Where no report is published for a listing yet, the documentation held for the lot being shipped can be requested before you order. We would rather send you what exists than let you assume a certificate is available when it is not.
Synthesis and supply
Peptide material is built by solid-phase synthesis, purified by preparative HPLC, then lyophilised. Lyophilisation freezes the solution and removes the solvent under vacuum, which is why the vial arrives holding a cake or powder rather than a liquid and why a solvent has to be added before the material can be worked with. Removing water also removes the main route by which a peptide degrades in storage, which is the reason the format is used.
Sequence length and modification are what make batches differ in difficulty. Every coupling step is an opportunity for a truncated or deleted by-product, and a heavily modified or long chain presents more of them, which is why the purity trace rather than the headline figure is what a certificate is read for. Vials are filled and labelled with the lot number, and the lot number is what the report and the verification lookup resolve against.
Because the product is a complex rather than a single molecule, the meaningful purity question is the copper-to-peptide ratio and whether any uncomplexed peptide remains, which is a different analysis to a conventional peptide purity run.
External resources for researchers
These are the public reference sources we use when checking the identity of GHK-Cu, and the ones worth going to before relying on anything stated on a product page, including this one.
- PubChem — Compound records, computed properties, depositor-supplied identity data.
- CAS Common Chemistry — CAS Registry lookups where a registry number is known.
- ChEBI — Curated chemical ontology entries with cross-references.
- Europe PMC — Primary literature search by compound name, sequence or registry number.
- Certificate hub — Reports published for the lots released so far.
Frequently asked questions
Is the copper reported separately from the peptide?
The material is a defined complex rather than a mixture, so the copper is part of the compound and the quoted formula mass includes it. For a metal complex the reporting basis is worth confirming before a concentration is calculated, and the batch record is where that is stated.
Does pH affect the intact complex?
It does. Coordination through a deprotonated backbone amide only holds at around neutral pH and above; under strongly acidic conditions the copper dissociates and the characteristic blue colour of the complex is lost. Buffer selection is a matter for the assay, and support does not advise on it.
Is GHK-Cu the same thing as GHK?
No. GHK is the uncomplexed tripeptide; GHK-Cu is that peptide bound to copper(II), with a different formula, a different mass and a different CAS number. Listings that use the two names interchangeably are describing two different materials.
Is GHK-Cu supplied for human or veterinary use?
No. GHK-Cu is supplied as a lyophilised powder in a sealed vial and is supplied strictly as a research chemical for in-vitro laboratory research. Products are sold exclusively to qualified researchers and licensed laboratories, and buyers confirm they are 18 or over and purchasing in the course of research. We only answer questions about specifications, documentation and orders.
How is the purity figure measured, and what does it actually tell me?
Purity is measured by reversed-phase HPLC at an independent laboratory, and the result is published with the method conditions rather than as a bare percentage. The figure is the proportion of the UV-absorbing material in the chromatogram that elutes as the target peak. It describes the sample as analysed; it is not a statement about what the material is for. A high figure alongside a clean chromatogram is the useful combination, which is why the report is worth reading rather than the headline number alone.
What documentation comes with a batch?
Each released lot carries a number printed on the vial label and a report stating purity by RP-HPLC, measured content against label, and the testing laboratory. Reports published so far are listed on this page and collected on the certificate hub, and each carries a lot number that can be checked against the vial in front of you. Where a report is not yet published for a listing, ask before ordering and we will send the documentation that exists for the lot being shipped.
How should GHK-Cu be stored?
In the form supplied, as a lyophilised powder, the material is stable kept cold, dry and dark. For powder, that means a freezer at around minus 20 degrees Celsius, desiccated, with the vial sealed and shielded from light, which is how it should stay until you are ready to work with it. Bringing a vial to room temperature before opening avoids condensation on the contents. Once in solution the material is less stable than the powder and should be kept cold and used within a short working window. Choosing a solvent and storage conditions for your own work is your call, not ours.
Do I need bacteriostatic water to prepare it?
A lyophilised powder needs a solvent added before it can be worked with. Bacteriostatic water, which is water with 0.9% benzyl alcohol, is the common choice because the preservative extends the working life of the solution once the vial has been opened, and we supply it in 3ml and 10ml vials. It is not the only option: where a method cannot tolerate benzyl alcohol, use the solvent the method specifies. The choice affects the sample, so it belongs to the researcher.
How and when is an order shipped?
Orders are dispatched from the United Kingdom. An order placed before 4pm on a working day is collected the same day; weekends and bank holidays roll forward to the next working day. UK orders go by tracked DPD next-day delivery, free on orders over 14 pounds and 4.99 pounds below that. Tracking is sent when the parcel is collected, so the first scan is usually visible the same evening.
Why is GHK-Cu blue when the peptide alone is not?
The colour comes from the copper. A copper(II) ion held in a ligand field absorbs visible light at particular wavelengths, and the combination of that absorption and the surrounding environment is what the eye reads as deep blue. The peptide contributes the binding site - principally the histidine residue - but not the colour. If a solution of this material loses its blue, the copper has been displaced and the complex is no longer intact.
What displaces the copper?
Anything that binds copper more strongly than the tripeptide does, and conditions that destabilise the complex. EDTA is the obvious example and is common in buffers; a pH outside the range the complex tolerates will also release the metal. Because the released copper remains in solution, losing the complex does not necessarily change the appearance of a clear solution much beyond the colour change, which is why checking the colour is a useful but not sufficient check.
What does the research literature use this complex for?
Studies of copper handling and coordination in cell culture systems. In that work the metal centre is central to the question being asked, which is why the intact complex rather than the free peptide is the material of interest. That is a description of a research model, and the material is supplied for in-vitro laboratory research only.
What should a certificate state for a metal complex?
Purity alone is not enough. The useful results are the copper content relative to peptide content, confirming the one-to-one stoichiometry, and whether any uncomplexed peptide is present. A purity figure from a reversed-phase run says something about the peptide component but nothing about whether the metal is still bound, so read a certificate for this material with that gap in mind.
Documentation & batch verification
The current released lot is IP-GHK50-002, tested 2026-08-24 by Janoshik Analytical (CZ): RP-HPLC purity 99.728% (RP-HPLC), measured content 51.10 mg/vial (GHK 42.52 mg · Cu 8.58 mg), identity Purity confirmed (RP-HPLC). The full report for this lot is published and can be checked online — verify this batch. See the full record for lot IP-GHK50-002 or all published certificates of analysis.
Published batch records show the laboratory, report date, purity and measured content where reported. Check the certificate for the exact lot: an HPLC purity result does not establish LC-MS identity, sterility or suitability for human or animal use. Review the published batch record before ordering.
Order GHK-Cu 50mg online — UK dispatch · Request an invoice · Verify a batch
Research use only. Not for human or animal consumption.