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Quality & Testing
Every batch is independently verified by an accredited third-party laboratory before it leaves our facility. No untested vial ships to a research lab — period.
Verification
Two independent analytical teams confirm purity and identity before any vial ships.
Peptides are made by solid-phase peptide synthesis (SPPS). Every batch is logged with a unique identifier and full chain-of-custody documentation from raw material through finished vial.
High-performance liquid chromatography measures the percentage of target peptide by area. We require ≥99% before a batch is released. Each chromatogram is reviewed by our analytical chemistry team.
Mass spec confirms the molecular identity matches the target peptide. This catches synthesis errors — like deletion sequences — that HPLC purity alone cannot detect.
LAL (Limulus Amebocyte Lysate) assays verify the absence of bacterial endotoxin contamination. Critical for any in-vitro work where endotoxin interference could compromise results.
Every batch ships with a downloadable COA documenting identity, purity, mass, endotoxin level, batch number, and test date. Two independent analytical teams sign off before any vial ships.
Documentation
Each COA documents the analytical data for the exact batch you receive.
Testing
Every MsAminobatch is tested in the United States by accredited laboratories before it ships — identity by mass spectrometry, purity by HPLC. The results go on that batch's Certificate of Analysis, so you can check the exact vial you receive.
Verification
In addition to in-house QC, every batch is verified by an independent, accredited third-party laboratory. The third-party lab issues its own HPLC and mass spec results, which we include alongside ours on the COA for that batch. Two independent analytical teams confirm purity and identity before shipment.
The Point
Research-grade peptides are used in dose-response curves, mechanism-of-action work, and assays where compound identity and purity directly affect interpretability. A peptide at 95% purity — a common research-vendor benchmark — contains five times more potential impurities than one at 99%+.
Those impurities can interact with cells, receptors, or assay reagents in ways that quietly compromise data integrity. We hold every batch to ≥99% HPLC purity not because the spec is convenient. Because the next 4% matters for your research.
Common Questions
At least 99% of the material in the vial is the target peptide as measured by HPLC area percent. The remaining ≤1% is residual reagents from synthesis, deletion sequences, or oxidation products — all below the threshold most research applications require.
Yes. Every product page has a COA download for the current batch, and our COAs hub lists the latest certificates for every active compound. Older batches are available on request — email us with your order number.
In the United States. Every batch is tested by accredited U.S. laboratories before it ships, and the COA for that batch is published on its product page.
No. Our peptides are research-grade, sold strictly for in-vitro research and laboratory use. They are not manufactured to pharmaceutical regulatory standards and are not intended for human or animal consumption.
Both share many analytical requirements (HPLC purity, mass confirmation, endotoxin testing). Pharmaceutical-grade additionally requires GMP-certified manufacturing, regulatory documentation (FDA filings, batch release per pharmacopoeia standards), and is intended for human therapeutic use. Research-grade is for in-vitro laboratory work only.
More on our policy in the research-use disclaimer and general FAQ.
Catalog
Each of these compounds goes through the same five-step verification process. Click any product for full specifications, structure data, and the latest batch COA.