GHK-Cu COA & Specifications
Third-party certificates of analysis and chemical specifications for GHK-Cu (copper tripeptide, Gly-His-Lys·Cu(II)) research material in 50 mg and 100 mg lyophilized vials.
Last updated 27 September 2026
Specifications
| Material | GHK-Cu (glycyl-L-histidyl-L-lysine copper(II) complex) |
|---|---|
| CAS number | 89030-95-5 |
| Sequence | Gly-His-Lys · Cu(II) |
| Physical form | Lyophilized powder |
| Vial sizes | 50 mg, 100 mg |
| Purity specification | ≥ 98% by HPLC |
| Storage | −20 °C, protected from light |
Certificates of analysis
GHK-Cu 50 mg — Lot KIZEN72826
| Laboratory | Optiq Health Labs (Santa Ana, CA) |
|---|---|
| Sample ID | 0929.OPT.260820 |
| Received / reported | 20 Aug 2026 / 29 Aug 2026 |
| Identity (LC-MS) | GHK-Cu confirmed |
| Assay (HPLC) | 50.15 mg per vial |
| Purity (RP-HPLC) | 99.7% (specification ≥ 98.0%) |
| Endotoxin (LAL) | Pass (≤ 0.05 EU/mg) |
| Sterility (USP <71>) | Pass (no growth) |
GHK-Cu 100 mg — Lot KIZEN72826
| Laboratory | Optiq Health Labs (Santa Ana, CA) |
|---|---|
| Sample ID | 0930.OPT.260820 |
| Received / reported | 20 Aug 2026 / 29 Aug 2026 |
| Identity (LC-MS) | GHK-Cu confirmed |
| Assay (HPLC) | 99.83 mg per vial |
| Purity (RP-HPLC) | 99.5% (specification ≥ 98.0%) |
| Endotoxin (LAL) | Pass (≤ 0.05 EU/mg) |
| Sterility (USP <71>) | Pass (no growth) |
Reading these results
- Identity (LC-MS) confirms the material’s molecular mass matches GHK-Cu.
- Assay is the measured amount of material per vial. 50.15 mg and 99.83 mg are within 0.4% of the 50 mg and 100 mg label amounts.
- Purity (RP-HPLC) is the main peak as a percentage of all detected material.
- Endotoxin and sterility are standard laboratory quality screens reported by the testing lab.
Verifying a certificate
Each Optiq Health Labs certificate carries a sample ID and a QR code that links to the lab’s own verification page. Compare the sample ID (0929.OPT.260820 or 0930.OPT.260820), lot number and results shown there with the certificate.
Frequently asked questions
What is the CAS number of GHK-Cu?
The CAS number for GHK-Cu, the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine, is 89030-95-5.
What purity is your GHK-Cu?
Our specification is 98% or higher by HPLC. The current certificates report 99.7% for the 50 mg vial and 99.5% for the 100 mg vial (lot KIZEN72826, Optiq Health Labs, 29 Aug 2026).
How should lyophilized GHK-Cu be stored?
Store the lyophilized powder at −20 °C, protected from light.
View GHK-Cu specifications & availability →
All certificates of analysis →
