Every certificate of analysis issued for compounds currently or formerly shipping. Active lots are highlighted; superseded and archived lots remain available for full lot-traceable history.


















Every certificate is issued by an independent third-party laboratory before the corresponding lot is listed for sale. Identity is confirmed by ESI-MS; purity is determined by reverse-phase HPLC with UV detection at 220 nm; endotoxin is measured by LAL kinetic chromogenic assay.