Quality Standards

Every compound we sell is tested per lot by an independent U.S. laboratory before it ships. The results are not a brand-wide claim — they are lot-specific measurements, published to the public COA library and searchable by the lot number printed on your vial.

What every lot is tested for

• Purity (RP-HPLC) — reverse-phase high-performance liquid chromatography quantifies purity against a reference standard. Our acceptance criterion is ≥ 99.0%.
• Identity (LC-MS) — mass spectrometry confirms the compound in the vial matches the label and the published sequence.
• Appearance — lyophilized powder inspected against specification.
• Net content — verified against label claim.

The verification process

• 01 — Synthesized. Material is produced and assigned a unique lot number that follows it through every record.
• 02 — HPLC purity. Purity is measured as a number, not a pass mark, with the raw chromatogram retained.
• 03 — Mass-spec identity. The compound is confirmed against its published sequence.
• 04 — COA published. The certificate goes into the public library before the lot ships.

The guarantee

Have any lot independently re-tested at a laboratory of your choosing. If the results don't match the purity printed on its published certificate, we refund the order in full.

Browse the COA library to see current lot certificates, or contact us for documentation requests.

Research use only

All products are intended solely for laboratory research and analytical purposes. They are not for human or veterinary use, and not for diagnostic or therapeutic use.