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GHK-Cu

GHK-Cu

Price range: $50.00 through $90.00

GHK-Cu is a copper-binding tripeptide — glycine, histidine and lysine (Gly-His-Lys) complexed with a copper(II) ion. It has the molecular formula C14H22CuN6O4, a molecular weight of 401.9 g/mol, and CAS number 89030-95-5. The free tripeptide without copper (GHK, CAS 49557-75-7) is a distinct compound: C14H24N6O4, 340.38 g/mol. Copper is held by three nitrogen donors — the glycine α-amino nitrogen, the deprotonated Gly–His amide nitrogen and the histidine imidazole — while the lysine side chain stays free. The resulting d-d absorption near 600 nm gives the complex its characteristic colour. First identified in human plasma in 1973, GHK-Cu is classified as a metallopeptide. It is supplied as a blue to blue-purple lyophilized powder, soluble in water, and should be kept refrigerated at 36‑46 °F (2‑8 °C) and protected from light. This product is strictly for research purposes only.

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Proudly Made in the USA
USA manufactured · USA tested · Ships from Gilbert, AZ
USA Manufactured
USA Lab Tested
Ships from Gilbert, AZ
✓ Third-Party Lab Tested

Certificate of Analysis

Independent laboratory testing confirms purity and composition of this research peptide.

Endo Passed

99.820%
Purity
A2926076
Batch
July 2026
Date
View Certificate →

Overview

GHK-Cu is a copper-binding tripeptide — a chain of three amino acids (glycine, histidine, and lysine) bound to a copper(II) ion. Its molecular formula is C14H22CuN6O4, with a molecular weight of 401.9 g/mol and CAS number 89030-95-5. The peptide was first identified in 1973 by Loren Pickart during research on human plasma, where he observed that a small copper-peptide complex was present in younger blood samples at higher concentrations than in older ones.

The copper ion is coordinated to the peptide through the nitrogen atoms of the glycine and histidine residues, giving the compound its distinctive blue color in crystalline form. This type of metal-peptide complex is relatively unusual among research peptides. GHK-Cu is naturally found in trace amounts in human plasma, saliva, and urine. It is classified as a metallopeptide — a peptide that incorporates a metal ion as part of its structure. The compound is supplied as a blue to blue-purple lyophilized powder, highly soluble in water, and should be stored refrigerated at 36-46 degrees F (2-8 degrees C) and protected from light.

This product is strictly for research purposes only.

PubChem Reference: View compound profile on NIH PubChem

This product is strictly for research purposes only. It is not approved for human or animal use and should only be handled by qualified researchers in appropriate laboratory settings.

Key Characteristics

MOLECULAR PROFILE

Formula: C14H22CuN6O4

Weight: 401.9 g/mol

CAS: 89030-95-5

Structure: Gly-His-Lys (with bound copper)

PHYSICAL PROPERTIES

Form: Blue crystalline powder (the blue color comes from the copper)

Solubility: Highly water-soluble

Natural Occurrence: Found in human plasma, saliva, and urine

Storage: Keep refrigerated 36–46 °F (2–8 °C), protect from light

Weight 0.08 lbs
Dimensions 0.87 × 1.18 × 0.87 in
Size

50mg, 100mg
SKU: OATH-GHK-CU Categories: , Tags: ,
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