About Key Peptides
About Key Peptides
Built by researchers, for researchers
Key Peptides started with two people, a shared fascination with peptide science, and a growing frustration with the state of the UK research peptide market.
We're a couple based in Yorkshire. Like a lot of people who follow this field closely, we found ourselves drawn into the science of peptides — the research, the literature, the sheer pace of discovery. But every time we looked at where researchers were actually sourcing their compounds, we ran into the same problem.
The problem we couldn't ignore
The research peptide market is full of suppliers who can't answer the most basic question a researcher should be able to ask: can you prove what's in the vial?
Most couldn't. No independent testing. No Certificate of Analysis. No batch traceability. No transparency about purity or identity. Just a product, a price, and a request to trust them. For a field built on precision and reproducibility, that wasn't good enough — and it wasn't acceptable to us.
So we decided to build the supplier we'd been looking for ourselves.
What we built
Key Peptides exists to do one thing properly: supply research compounds that are independently verified, fully documented, and delivered with the care the work deserves.
That means:
Every batch is independently tested in the UK. Before any product is supplied, samples are analysed by an independent UK laboratory using HPLC for purity and mass spectrometry for identity confirmation. Our specification is ≥98% purity. Nothing ships without passing. See how we test →
Every order includes a Certificate of Analysis. You get the documented proof of what was tested and what was found, tied to the specific batch you received. No claims without evidence.
Everything ships fast and discreetly. Orders placed before 3pm Monday to Friday are dispatched the same business day from our Yorkshire facility, in plain unmarked packaging, via tracked courier.
Why it matters to us
We're not a faceless reseller drop-shipping unverified product. We built Key Peptides because we wanted a UK supplier we could genuinely stand behind — one where the testing is real, the documentation is published, and the standards don't slip.
Every researcher who orders from us deserves to know exactly what they're working with. That principle runs through everything we do, from the lab we test with to the way we pack a parcel. It's the standard we wanted as researchers ourselves, and it's the standard we hold ourselves to now.
Our standards, in short
- Independent UK laboratory testing on every batch
- HPLC purity analysis and mass spectrometry identity confirmation
- Certificate of Analysis included with every order
- ≥98% purity specification
- Same-day dispatch before 3pm, Monday to Friday
- Discreet, plain, tracked packaging
- A UK-based team that knows the field and answers properly
Get in touch
Questions about a compound, a Certificate of Analysis, or an order? We answer every enquiry personally, usually within one business day. Contact us →
Browse all research compounds →
All products supplied by Key Peptides are sold strictly for laboratory and research purposes. They are not licensed medicines and are not intended for human or veterinary use, administration, consumption, medical treatment, diagnosis, or therapeutic application. See our full Disclaimer.