Skin & collagen
GHK-Cu
A three-amino-acid peptide carrying a bound copper ion.
Specification
- Presentation
- 50 mg lyophilised vial
- Total peptide
- 50 mg
- Vial capacity
- To be determined: vial capacity in mL, from the supplier's packing spec
- Price per vial
- $32.00$27.2015% off
- Price per mg
- $0.64/mg$0.54/mg
Certificate of analysis
A certificate of analysis is the document a laboratory issues for one specific batch, reporting what testing found in that batch. It is batch-specific: a certificate for a different lot tells you nothing about yours, which is why every figure below names the lot it came from.
Third-party verified
LOT 10085153553 · 2606030416
Latest99.4%purity by HPLC-UV
Spec not stated
| Test | Result | Spec |
|---|---|---|
| Identity | Confirmed | — |
| Water content | Not on certificate | |
| Heavy metals | Not on certificate | |
| Sterility | Not on certificate | |
| Labeled | 50 mg | — |
| Measured | 56.38 mg | — |
| Tested | Jun 5, 2026 | |
1 of 3 assays passed · Freedom Diagnostics
Batch 1 of 1, lot 10085153553
Storage
Handled as a lyophilised solid under standard laboratory practice. Copper complexes are sensitive to chelating agents and to pH, so contact with unintended buffers is avoided in laboratory work.
Stated conditionsTo be determined: storage conditions from supplier COA
Description
GHK is one of the shortest peptides in commercial use: glycine, histidine and lysine — three amino acids, nothing more. The sequence occurs naturally in human plasma and in collagen. GHK-Cu is that tripeptide holding a single copper(II) ion in a one-to-one complex. The copper is not an additive; the peptide's known chemistry is largely about its ability to bind and carry copper, which is an essential trace element several enzymes depend on.
Copper is a required cofactor for enzymes involved in building and cross-linking connective tissue — lysyl oxidase, which cross-links collagen, is the standard example. A small peptide that binds copper can act as a carrier, and the proposed mechanism for GHK-Cu is that it delivers copper in a form cells can take up, while the peptide itself influences the expression of genes involved in extracellular matrix turnover. Of everything in this catalogue, GHK-Cu has the most straightforward story: it is a copper carrier, and copper is genuinely needed for connective-tissue chemistry.
Technical data
- Sequence
- Gly-His-Lys (GHK), complexed 1:1 with copper(II)
- Molecular formula
- C14H24N6O4Cu (the 1:1 copper complex)
- Molecular weight
- GHK free peptide 340.38 g/mol; GHK-Cu complex approximately 403.9 g/mol
- CAS number
- To be determined: CAS for the copper complex specifically — 49557-75-7 is the free GHK tripeptide and vendors often misapply it
- Purity
- 99.4% by HPLC-UVfrom lot 10085153553
- Physical form
- Blue lyophilized powderfrom lot 10085153553
- Solubility
- To be determined: solubility data from supplier COA
Purity, physical form and solubility above are transcribed from the certificate of analysis for lot 10085153553. A certificate covers one batch — every lot we hold a document for. Fields still marked to be determined are not on that certificate.