GZ Biolabs
Research-grade peptides
Certificate of Analysis
Document COA-GZ-5136
Product Name
Retatrutide
Description
Triple Agonist
Catalog Size
10 mg
Lot Number
GZ-5136
Batch
K636
Appearance
White to off-white lyophilized powder
Manufacture Date
August 25, 2025
Analysis Date
August 28, 2025
Retest / Expiry
August 25, 2027
Overall Purity
99.4 %
Analytical Results
| Test | Method | Specification | Result | Status |
|---|---|---|---|---|
| Purity (HPLC) | RP-HPLC, UV 220 nm | ≥ 98.0 % | 99.4 % | Pass |
| Molecular Weight | ESI-MS / MALDI-TOF | Conforms to structure | Conforms (Δ 0.26 Da) | Pass |
| Appearance | Visual | White to off-white powder | White lyophilized powder | Pass |
| Water Content | Karl Fischer | ≤ 6.0 % | 2.9 % | Pass |
| Acetate Content | Ion Chromatography | ≤ 10.0 % | 5.6 % | Pass |
| Endotoxin | LAL Assay | ≤ 0.50 EU/mg | 0.25 EU/mg | Pass |
| Peptide Content | Nitrogen (Dumas) | ≥ 80.0 % | 87.0 % | 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 August 28, 2025