Order high-purity GHK-Cu 50mg from Eternal Peptides, the trusted U.S. source for verified research compounds. This naturally occurring copper-binding tripeptide is synthesized to a standard of ≥99% purity, with every batch independently tested by Janoshik Analytical. Order today for fast, secure US shipping and free Priority delivery on all orders over $200.
GHK-Cu Peptide Characteristics
| Property | Description |
| Name | GHK-Cu (Copper Tripeptide-1; glycyl-L-histidyl-L-lysine copper complex) |
| Sequence | GHK (Gly-His-Lys) complexed with Cu²⁺ |
| Molecular Weight | ~403.9 g/mol (GHK-Cu complex; minor variation may occur based on copper coordination state) |
| Molecular Formula | C28H48CuN12O8 |
| Identifiers | PubChem CID 133697840 |
| Structural Class | Naturally occurring tripeptide–metal complex |
| Product Form | Lyophilized powder supplied in sterile research vials |
| Available Sizes | 50 mg and 100 mg vials |
| Purity | Typically ≥99% purity; verified via lot-specific Certificate of Analysis (COA) |
| Solubility | Soluble in sterile water or appropriate aqueous laboratory buffers; gentle mixing recommended to avoid foaming |
| Stability | Stable as a lyophilized powder when stored cold, dry, and protected from light; reconstituted solutions should be handled according to laboratory SOPs |
| Research Designation | For research use only; not approved for human or veterinary use |
Batch: EP-250810-GH50
GHK-Cu Handling & Storage Guidelines
GHK-Cu should be stored as a lyophilized powder in a tightly sealed vial at –4°F to –112°F (–20°C to –80°C) for long-term stability. When short-term storage is required, refrigeration at 36–46°F (2–8°C) is acceptable provided the vial is protected from light and moisture. Keep the material dry and minimize exposure to ambient humidity, as copper–peptide complexes are sensitive to environmental conditions.
If reconstitution is required, allow the vial to reach room temperature before opening to prevent condensation. Reconstitute using sterile, research-grade water or a compatible buffered solution. Add the solvent slowly along the vial wall and gently swirl until fully dissolved. Do not shake vigorously, as this may compromise peptide integrity.
To reduce degradation, reconstituted GHK-Cu should be aliquoted into single-use volumes. This practice limits repeated freeze–thaw cycles, which can destabilize the peptide and affect copper coordination. Avoid refreezing thawed aliquots whenever possible.
Reconstituted working solutions may be stored short-term at 36–46°F (2–8°C) for limited experimental use. For longer-term storage, aliquots should be frozen at –4°F to –112°F (–20°C to –80°C) and clearly labeled with concentration and preparation date.
Note: GHK-Cu is intended for laboratory research use only. Handle using appropriate personal protective equipment and follow all institutional safety, handling, and disposal protocols to ensure compliance with laboratory and regulatory standards. For best results, order bacteriostatic water for reconstitution directly from Eternal Peptides.
COA / Quality Assurance
Each lot of GHK-Cu supplied by Eternal Peptides is accompanied by a lot-specific Certificate of Analysis (COA) to support research accuracy, reproducibility, and quality assurance.
Certificates of Analysis (COAs) help support research data integrity and reproducibility.. They provide detailed analytical verification and quality data to help researchers confidently evaluate material suitability before use.
COAs typically include:
- Peptide identity confirmation using analytical techniques such as HPLC and/or mass spectrometry
- Verified purity specifications
- Sterility testing, where applicable
- Endotoxin level assessment
- Recommended storage conditions
Eternal Peptides works with independent third-party analytical laboratories, such as Janoshik, to ensure objective, reliable testing. Each COA is fully traceable to a specific production lot and is accessible through the Lab Tests page, supporting transparent documentation, audit readiness, and reproducible research outcomes.
Legal / Regulatory Disclaimer
GHK-Cu is supplied by Eternal Peptides strictly for laboratory research use only. It is not approved for human or veterinary use, clinical administration, therapeutic intervention, or diagnostic procedures.
The safety and efficacy of this compound in humans or animals have not been established. Purchasers and users are solely responsible for ensuring compliance with all applicable local laws, regulations, institutional biosafety requirements, and research-use policies.
Any misrepresentation of intended use or deviation from research-only application may result in regulatory enforcement actions or legal consequences.
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At every step, we prioritize quality by conducting rigorous third-party testing on all our products. These tests focus on five key characteristics — identity, purity, sterility, endotoxin levels, and heavy metal content — ensuring that each product meets the highest standards of quality, with independent third-party Certificates of Analysis (COAs) to verify our commitment to excellence.
Identity Test
Identity testing ensures that the product contains the correct ingredient as labeled, verifying its authenticity and matching it to established reference standards.
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Purity and concentration testing verifies that the ingredient is present in the correct amount, with a purity of 99% or higher to meet stringent quality standards.
Sterility Test
Sterility testing ensures that the product is completely free from bacteria, fungi, and other microorganisms.
Endotoxin Test
Endotoxicity testing specifically detects and quantifies lipopolysaccharides (LPS), components of bacterial cell walls, to ensure the product is free from endotoxins.
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