PrymaLab AnalyticalCertificate of Analysis ยท Lot release ยท tested in-housePrymaLab Analytical ยท Attn: Sample intake ยท 3705 Music Branch Rd ยท Ashland, KY 41102 ยท United States
Certificate number
PL-26-00113
Key
7LEZDSC5
Verify at prymalab.net/testing/verify/
Tirzepatide 40 mg Lot PL-2609-113 ยท analysed September 19, 2026 ยท issued October 3, 2026
Purity ยท RP-HPLC99.32%Specification 99.0% โข main peak at 8.74 min
Identity ยท Observed Mass4813.8 DaTheoretical 4813.5 Da โข +0.3 Da (62 ppm)
ConclusionPASSMeets every specification for the tests performed
The certificate
Summary
| Compound | Tirzepatide LY3298176; GIP/GLP-1 receptor dual agonist |
|---|---|
| CAS number | 2023788-19-2 |
| Molecular formula | C225H348N48O68 |
| Theoretical mass | 4813.5 Da |
| Sequence / structure | H-Y-Aib-EGTFTSDYSI-Aib-LDKIAQK(2รAEEA-ฮณGlu-C20 diacid)AFVQWLIAGGPSSGAPPPS-NHโ (39 residues; Aib2 and Aib13; Lys20 acylated with eicosanedioic acid via ฮณ-Glu and two AEEA spacers; C-terminal amide) |
| Appearance | White lyophilized powder |
| Storage | โ20 ยฐC, desiccated, dark |
| Label claim | 40 mg/vial |
| Lot number | PL-2609-113 |
| Certificate number | PL-26-00113 |
| Date of analysis | 2026-09-19 (retest 2028-09-18) |
| Purity (RP-HPLC) | 99.32% |
| Identity (LC-MS) | 4813.8 Da |
| Water content (KF) | 2.0% |
| Endotoxin (LAL) | 0.04 EU/mg |
| Sterility | No growth; conforms |
| Conclusion | PASS |
| Tested by | PrymaLab Analytical (PrymaLab's own laboratory, Ashland, KY). In-house result, not an independent third-party test. |
Third-party testing guarantee. Have this product tested by any independent laboratory. If the result does not come back as the compound named on the label, at the purity and amount stated, we refund your order in full and reimburse the cost of the test. Email the lab report and your order number to michael@prymalab.net.
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