GHK-Cu 50mg | Lyophilised Powder
✓ Verified peptide quality
✓ ≥99% purity by HPLC
✓ Current test certificate available
✓ Held in UK stock
✓ Free Royal Mail 24 Tracked delivery
✓ Orders before 3pm dispatched the same working day
GHK-Cu is a copper(II) coordination complex of the tripeptide glycyl-L-histidyl-L-lysine. Unlike the other materials on this catalogue it is a metal complex rather than a peptide alone, and the copper is integral to the compound's identity — not an additive.
A visual note, because it catches people out: GHK-Cu is a deep blue to blue-violet powder, not white. The colour comes from the copper(II) centre and is the first thing to check on receipt. A white or off-white powder sold as GHK-Cu warrants a query.
Chemical identity
| Compound | GHK-Cu (copper tripeptide complex) |
| CAS number | 89030-95-5 (copper complex) |
| Free tripeptide CAS | 49557-75-7 (GHK, C₁₄H₂₄N₆O₄, 340.38 g/mol) |
| Molecular formula | C₁₄H₂₂CuN₆O₄ |
| Molecular weight | 401.91 g/mol |
| Peptide sequence | Gly-His-Lys |
| Coordination | Copper(II) complex |
| PubChem CID | 378611 |
| UNII | 6BJQ43T1I9 |
| Also indexed as | Copper tripeptide-1, copper peptide, prezatide copper, glycyl-L-histidyl-L-lysine copper(II) |
Nomenclature note: "Copper Tripeptide-1" is the INCI designation for this compound. It is listed here as an identifier only — this material is supplied for laboratory research and is not offered for cosmetic use.
Product specification
| Nominal fill | 50mg |
| Purity | ≥99% by HPLC |
| Identity confirmation | Mass spectrometry |
| Physical form | Lyophilised powder |
| Appearance | Deep blue to blue-violet |
| Water solubility | Approximately 50 mg/mL |
| Documentation | Lot-specific certificate of analysis |
Storage and handling
Store sealed at −20°C for long-term storage, protected from light and air. Copper complexes are light-sensitive; keep in the original amber or opaque container. Equilibrate to ambient temperature before opening.
Supply and despatch
UK stock. Same-day despatch before 3pm, Royal Mail 24 Tracked.
FAQ
What colour should GHK-Cu be? Deep blue to blue-violet. The colour derives from the copper(II) centre. White powder sold as GHK-Cu should be questioned.
What is the CAS number for GHK-Cu? 89030-95-5 for the copper complex. The free tripeptide GHK without copper is 49557-75-7 — a different material.
Is GHK-Cu a peptide? It's a metal-peptide complex: the tripeptide glycyl-L-histidyl-L-lysine coordinated to copper(II).
Why is this supplied in 50mg vials rather than 10mg? GHK-Cu has a much lower molecular weight than the peptides on this catalogue (401.91 g/mol), so a given molar quantity corresponds to considerably less mass. The 50mg fill reflects typical laboratory requirements.
