Certificate of Analysis
Independent HPLC purity and mass-spec identity — documented for every lot before it ships.
No certificates match your search.
What every certificate covers
Each lot is assayed by an independent laboratory before it’s listed — and the signed certificate is published here and lives in your account.
HPLC purity
Reverse-phase chromatography quantifies purity — the headline number on every certificate.
Mass-spec identity
Mass-to-charge analysis confirms the compound is exactly what the label claims.
Net peptide content
The actual peptide mass per vial — not just gross weight including salts and water.
Endotoxin
Screened to confirm bacterial endotoxin sits below a conservative threshold.
Appearance
Visual confirmation of the lyophilized cake or solution against spec.
Heavy metals
Tested to verify trace metals remain within safe analytical limits.
Lot archival
Every batch carries a unique lot ID linked to its certificate, kept on file.
Don’t see your lot?
Every lot has a published certificate you can look up. Need a specific COA before you buy, or testing on a compound that isn’t live yet? We’ll send it over.
Request a COA