Pens arrive pre-filled - no powder to reconstitute

Celyfe
Laboratory photo: lab instrument

About us

Advancing research, one pen at a time.

Committed to providing researchers with the highest quality compounds, verified documentation, and exceptional service.

Laboratory photo: lab vials row

Our mission

Supporting the scientific community

Celyfe exists to take the preparation step out of research peptide supply. Every compound we sell is pre-mixed, sealed in a calibrated pen and documented batch by batch, so a laboratory spends its time on the experiment rather than on reconstitution arithmetic.

We keep the catalogue short on purpose: four pens, each with a batch certificate. If a compound cannot be documented to that standard we do not sell it.

See the pens

Our values

What we stand for

Purity First

Every batch is tested via HPLC, achieving 99%+ purity standards consistently.

Full Transparency

Certificates of Analysis are provided with every order. We believe researchers deserve complete data.

UK Based

Operated from the United Kingdom with fast domestic shipping and responsive customer support.

Research Focused

Our catalogue is curated for research applications. We stay current with scientific literature.

Quality assurance

Measured, not claimed

Our quality assurance process is the backbone of everything we do. From sourcing raw materials from GMP-certified manufacturers to filling and verifying every cartridge in-house, we ensure that every pen that leaves our facility meets the highest standards.

We work with accredited third-party laboratories to independently verify our purity claims. This dual-testing approach gives our customers confidence that the compounds they receive are exactly as described, every single time.

Read about our testing

99%+

Minimum purity

HPLC

Tested

3rd party

Verified

Batch

Traceable

Laboratory photo: molecular network

Editorial process

How we write about compounds

Plain British English, peer-reviewed sources, no medical claims. Every product page and guide follows the same rules.

About us | Celyfe