GHK-Cu is the copper(II) complex of GHK (glycyl-L-histidyl-L-lysine), a three-amino-acid peptide. It is one of the most studied small peptides in cell-culture and cosmetic-formulation research. This guide covers what it is, its chemical identity, and the formats we carry for laboratory research.
What is GHK-Cu?
GHK was first isolated from human plasma by Loren Pickart in 1973. The tripeptide binds copper(II) ions with high affinity, and the copper complex is what researchers call GHK-Cu. In published laboratory work it has been studied mainly for its effects on gene expression and extracellular-matrix proteins such as collagen in cell and tissue models.
GHK-Cu chemical identity
| Full name | Glycyl-L-histidyl-L-lysine copper(II) complex |
| Sequence | Gly-His-Lys |
| CAS number | 89030-95-5 |
| Molecular formula | C14H22CuN6O4 |
| Molecular weight | 401.9 g/mol |
What researchers study
- Gene-expression profiling in cell culture.
- Extracellular-matrix and collagen synthesis in fibroblast and tissue models.
- Copper transport and binding chemistry.
- Topical formulation research, where it is a common reference peptide.
GHK-Cu formats at Explicit SARMs
| Product | Format | Price |
|---|---|---|
| GHK-CU 50mg | Lyophilized powder, 50mg per vial | $65.00 |
| GHK-CU Gel | Topical gel | $115.00 |
| GLOW 70mg | Blend vial with BPC-157 and TB-500 | $165.00 |
| KLOW 80mg | Blend vial with BPC-157, TB-500 and KPV | $195.00 |
Prices as of November 2026. GHK-Cu is also in our KLOW capsules and GLOW capsules.
Testing
Our manufacturer tests it twice during production, and we use an independent third-party lab for purity testing. A COA is available on request.
Related: what is the KLOW blend, KLOW vs GLOW and how to read a COA.
FAQ
What is GHK-Cu?
GHK-Cu is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine (GHK). It is studied in cell-culture and formulation research.
What is the CAS number for GHK-Cu?
The CAS number for GHK-Cu is 89030-95-5. Its molecular formula is C14H22CuN6O4, with a molecular weight of about 401.9 g/mol.
Who discovered GHK?
GHK was first isolated from human plasma by Loren Pickart in 1973.
What GHK-Cu formats does Explicit SARMs carry?
A 50mg lyophilized vial, a topical gel, and the GLOW and KLOW blends in vial and capsule form. All are for laboratory research use only.
Is GHK-Cu tested?
Our manufacturer tests it twice during production, and we use an independent third-party lab for purity testing. A COA is available on request.
All products mentioned are sold for laboratory research use only and are not for human consumption.