Quality & Compliance
Transparency, as a product.
Every batch ships with a third-party-verified Certificate of Analysis. Analytical methods are aligned with USP <1225> and ICH Q7.
Scan vial → Verify COA
peptidexpo.com/coa/PX-26-A0517
Vial-filling line · Shanghai facility · captured on production day
Quality You Can Verify
Scan the vial. See the COA.
Every vial we ship carries a QR code linking directly to that batch's third-party-verified Certificate of Analysis. No tickets, no email loops, no opacity.
≥99%
Purity by HPLC + MS
100%
Batches with COA
<12h
First response
HPLC + Mass Spec on every batch — analytical methods aligned with USP <1225>.
LAL endotoxin + microbial limits for injectable-route applications.
Stability program — accelerated (40°C/75%RH) and long-term data on request.
Analytical Methods
What we test on every batch.
| Test | Method | Target |
|---|---|---|
| HPLC purity | RP-HPLC · USP <621> compliant | ≥ 99.0% |
| Identity (MS) | ESI-MS · ±0.5 Da from theoretical | Confirmed |
| Peptide content | Mass balance + AAA | 75–90% (lyophilized) |
| Water content | Karl Fischer | ≤ 8.0% |
| Counter-ion | Ion chromatography | Acetate (standard) |
| Bacterial endotoxin | LAL (gel-clot / kinetic chromogenic) | < 0.25 EU/mg (injectable) |
| Microbial limits | USP <61>/<62> | Compliant |
| Residual solvents | GC headspace | ICH Q3C limits |
Documentation
Everything your QA team needs.
We ship a Certificate of Analysis with every order. On request we provide HPLC chromatograms, MS spectra, stability data, SDS, sequence verification, and a full QA workpacket.
Certificate of Analysis
Per-batch, includes HPLC purity, identity, water content, microbiology.
HPLC chromatogram
Raw chromatogram showing main peak and impurities profile.
Mass-spec spectrum
ESI-MS confirmation of molecular mass within ±0.5 Da.
Stability data
Accelerated (40°C/75%RH) and long-term real-time data.
Sequence report
Independently verified amino-acid sequence for peptides > 5 aa.
Catalog PDF
Full SKU list with vial sizes, MOQ, and lead times. Updated quarterly.
Certifications & alignments
Built to international standards.
Let's talk peptides.
First response under 12 hours · Catalog · Sample COA · MOQ · Lead time. Our regulatory and sales teams review every inquiry before pricing.