• Quality & Guarantee

    Built for Research You Can Trust

  • We do not manufacture peptides ourselves — and that's exactly why we can be so rigorous. We partner only with ISO-certified facilities in China and apply our own multi-layer verification process to every single order. Your research deserves reproducibility and reliability.

  • Our Guarantee – Resynthesis or Full Refund

    If the delivered peptide does not meet the agreed purity specification (as confirmed by HPLC/MS), we will:

    • Resynthesize at no cost to you, or
    • Issue a full refund for that order

    This guarantee covers purity only. Modifications, quantity, and delivery timelines are covered under separate terms. Contact us for complete details.

    Why We Can Offer This Guarantee

    Because we vet every supplier, verify every CoA, and test every batch before shipping. If something goes wrong, we make it right — without excuses.

  • Our Quality Verification Process

    Section image

    Pre-synthesis review

    We assess sequence difficulty, identify potential challenges (aggregation, low solubility, difficult couplings), and propose solutions before synthesis begins.

    Section image

    In-process checks

    We monitor critical steps and request intermediate QC data for long or difficult sequences.

    Section image

    Final QC before shipping

    Every batch is tested by HPLC (purity) and MS (identity). CoA is generated and reviewed by us before we authorize shipping.

    Section image

    Optional third-party validation

    For an additional fee, we can send a sample to an independent lab for blind purity testing. You receive an unbiased report.