Quality Assurance
Every product ships with a batch-specific Certificate of Analysis from independent third-party testing. No exceptions.
Our Quality Promise
Research integrity depends on compound purity. We verify every batch so you can trust your results.
Independent Third-Party Testing
Every batch is tested by an independent analytical laboratory — never in-house only. This eliminates conflicts of interest and ensures objective purity verification.
HPLC & Mass Spectrometry
We use high-performance liquid chromatography (HPLC) for purity analysis and mass spectrometry (MS) for identity confirmation. These are the gold-standard methods used by pharmaceutical laboratories worldwide.
≥98% Purity Standard
We hold every product to a minimum purity threshold of 98% by HPLC. Batches that fall below this standard are rejected and never shipped to researchers.
Testing Process
From synthesis to your lab — every step is documented and verified.
Synthesis & Purification
Peptides are synthesized via solid-phase peptide synthesis (SPPS) and purified using preparative HPLC to remove truncated sequences and impurities.
Independent Analytical Testing
Each purified batch is sent to an independent third-party laboratory for HPLC purity analysis and mass spectrometric identity confirmation.
Batch-Specific COA Issued
A unique Certificate of Analysis is generated for each production batch, documenting purity, identity, and lot number. This COA ships with your order.
What's on a Certificate of Analysis
Every COA documents the analytical results for a specific production batch. Here's what each section means.
Product Identity
Compound name, molecular formula, molecular weight, CAS number, and batch/lot number for traceability.
HPLC Purity
The percentage of the target peptide in the sample, determined by reverse-phase HPLC. Look for ≥98% on research-grade compounds.
Mass Spectrometry
Confirms the molecular identity by comparing observed mass to the expected molecular weight. A match within ±1 Da indicates correct synthesis.
Appearance & Solubility
Physical characteristics of the lyophilized powder — color, form, and reconstitution behavior in standard solvents.
Endotoxin & Sterility
Bacterial endotoxin levels (LAL test) and sterility data when applicable. Critical for in-vitro cell culture applications.
COA Red Flag Checker
Evaluate any vendor's COA for legitimacy with our interactive checklist.
HPLC Purity Interpreter
Enter HPLC peak areas to calculate purity with a visual breakdown.
Have Questions About Purity?
Our team is available to discuss testing methodology, provide additional batch documentation, or answer technical questions about our analytical process.
Contact UsAll products are sold as research reference materials for in vitro laboratory use only. Certificates of Analysis document analytical testing results and are not intended as product endorsements for any specific application.