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Same-day dispatch
Bulk pack pricing available
COA available on request
Discreet packaging · Card, Apple Pay & Samsung Pay accepted
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    Built for Researchers.
    Backed by Science.

    MarquePeptides was founded on one principle: research deserves reagents that don't compromise. Every vial, every batch, every shipment — held to a standard higher than the industry requires.

    Our Story

    Started in a lab. Grown by trust.

    MarquePeptides was founded in 2019 by a team of biochemists and research operations veterans who spent too many years wrestling with inconsistent reagent suppliers — mystery COAs, cold-chain failures, and purity that fell short of the label.

    We built the company we wished existed: transparent purity documentation, HPLC-verified batches, real-time cold-chain tracking, and support staff who actually understand what you're working on.

    Today MarquePeptides serves research labs, universities, and clinical research organizations across 40+ countries. Every order still ships with the same standard we started with: if it's not lab-worthy, it doesn't leave the door.

    C₁₈₇H₂₉₁N₄₅O₅₉ · Semaglutide analog
    What We Stand For

    Three pillars. Zero compromise.

    Verified Purity

    Every batch tested by HPLC and mass spectrometry to ≥ 98% purity. Full Certificate of Analysis included with every shipment. Third-party verification available on request.

    Cold-Chain Integrity

    Medical-grade insulated packaging, temperature-tracked shipments, and 2–8°C guarantee door to door. If integrity is compromised, we replace it — no questions.

    Research-First Support

    Our support team includes PhDs and research operations veterans. Ask us about handling, reconstitution, storage — real answers from people who understand your work.

    40+
    Countries Served
    ≥ 98%
    HPLC Purity
    72h
    Avg. US Delivery
    100%
    Cold-Chain Coverage
    Quality & Compliance

    The 5-step verification behind every vial.

    We don't stop at "batch tested." Every peptide we ship passes through a five-stage verification loop that starts at synthesis and ends at delivery.

    • 1

      Synthesis in cGMP-adjacent facilities

      All peptides synthesized in facilities audited for cGMP-adjacent controls, with documented raw material traceability.

    • 2

      HPLC purity verification

      Every batch analyzed by reverse-phase HPLC. Peptides below 98% purity are rejected.

    • 3

      Mass spectrometry confirmation

      Molecular weight and identity confirmed by LC-MS or MALDI-TOF for every lot.

    • 4

      Endotoxin & sterility screening

      LAL testing for endotoxin levels. Sterility confirmed for lyophilized products.

    • 5

      Cold-chain documented shipment

      Temperature-logged shipping with proof of integrity at delivery.

    Research deserves better reagents.

    Explore our catalog of research-grade peptides — every batch documented, every shipment tracked, every question answered.

    Browse Catalog → Talk to Our Team