GZ Biolabs
Research-grade peptides
Certificate of Analysis
Document COA-GZ-2778
Product Name
GHK-Cu
Description
Copper Peptide
Catalog Size
50 mg
Lot Number
GZ-2778
Batch
A978
Appearance
White to off-white lyophilized powder
Manufacture Date
October 6, 2025
Analysis Date
October 9, 2025
Retest / Expiry
October 6, 2027
Overall Purity
99.1 %
Analytical Results
| Test | Method | Specification | Result | Status |
|---|---|---|---|---|
| Purity (HPLC) | RP-HPLC, UV 220 nm | ≥ 98.0 % | 99.1 % | Pass |
| Molecular Weight | ESI-MS / MALDI-TOF | Conforms to structure | Conforms (Δ 0.12 Da) | Pass |
| Appearance | Visual | White to off-white powder | White lyophilized powder | Pass |
| Water Content | Karl Fischer | ≤ 6.0 % | 1.2 % | Pass |
| Acetate Content | Ion Chromatography | ≤ 10.0 % | 7.7 % | Pass |
| Endotoxin | LAL Assay | ≤ 0.50 EU/mg | 0.04 EU/mg | Pass |
| Peptide Content | Nitrogen (Dumas) | ≥ 80.0 % | 82.2 % | Pass |
Storage
Store lyophilized at -20 °C, protected from light. Reconstituted material stable ~4 weeks at 2–8 °C.
This lot has been reviewed and conforms to all specifications. Released for research use only. Not for human or veterinary use.
GZ Biolabs QC
Quality Control, Authorized Release
Issued October 9, 2025