PepLab  /  Research peptides

The standard in research peptides.

Precision, purity and verification. Every claim we make is one we can show you the paperwork for.

Principles

Science you can check, not take on trust.

HPLC %

Purity

Purity is measured by HPLC on each batch and reported as a number, with the chromatogram, never as a slogan.

m/z

Identity

Mass spectrometry confirms that the molecule in the vial is the sequence on the label.

Lot №

Traceability

Each lot carries a number that links to its own certificate of analysis and the laboratory that issued it.

Rendered peptide helix
Visualisation
The Lab

Built around the research, not the sale.

PepLab exists to set a higher bar for research peptides: clear sourcing, independent analysis and documentation a scientist would accept.

We only work with synthesis and analytical partners who meet a published standard: independent laboratories accredited to ISO/IEC 17025, and manufacturers able to provide full batch documentation. As partnerships are confirmed, their names, locations and accreditations will be listed here so you can verify them yourself.

This website does not sell products. It is a reference point for researchers and institutions who want to understand how we work.

Reference library

Compound data sheets.

Identity data for the compounds we study, checked against public chemical registries. Reference information only; nothing listed here is offered for sale.

CompoundSequence / structureFormulaMW (g/mol)CASRegulatory status

MW is average molecular weight of the free base unless stated. Sources: PubChem, NCATS Inxight Drugs, supplier data sheets. Status reviewed October 2026.

Quality

What every batch record contains.

  • HPLCPurity by high-performance liquid chromatography, with the full trace attached.
  • MSMolecular weight confirmed by mass spectrometry against the theoretical value.
  • LabThe independent laboratory named, with its ISO/IEC 17025 accreditation number.
  • StorageRecommended storage conditions and the date the analysis was carried out.
  • LotA unique lot number that ties the certificate to a single production run.
Certificate of analysisExample layout
Compound
GHK-Cu (copper tripeptide-1)
Sequence
Gly-His-Lys · Cu²⁺
Formula
C₁₄H₂₂CuN₆O₄
Mol. weight
401.9 g/mol (theoretical)
Lot №
— published per batch —
Purity
— HPLC result —
Identity
— MS result —
Tested by
— independent laboratory —

Real certificates will be published here, batch by batch, once each one has been issued by the testing laboratory.

Verify a batch

Check a certificate by lot number.

Enter the lot number printed on the label. If a certificate of analysis has been published for that lot, it appears here with the issuing laboratory.

Certificates are published as each batch is tested.

Contact

Research and institutional enquiries.

Emailinfo@thepeplab.co.uk
EnquiriesResearch groups & institutions
ResponseWithin two working days

PepLab does not sell products through this website. Information here is provided for scientific reference only. Nothing on this site has been evaluated by the Medicines and Healthcare products Regulatory Agency (MHRA), and nothing here is intended to diagnose, treat, cure or prevent any disease or to be used in humans.

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