How the store works
Built to be checked.
A researcher should be able to read the evidence for a lot before ordering it, and check the vial against that evidence when it arrives. The store is built around that one idea.

On the record
Everything we claim, and where to check it.
We would rather be checked than believed. Each line is something the store does, with the page where you can see it for yourself.
- Release minimum
- 99.0% HPLC purity For every lot on sale. A lot below it can’t be listed.
- Quality standard
- Identity
- Mass-spec identity Every lot’s record pairs its average mass, as measured by mass spectrometry, with the average mass calculated from its sequence. A lot whose two masses differ by more than 1.0 Da can’t be listed.
- How identity is checked
- Certificate
- Published before sale On file and linked from the product page before a lot can be bought.
- Browse the catalog
- Traceability
- A lot number on every label It opens the same record on Verify that was published before the sale.
- Verify a lot
- Sequences
- Sequence, formula and mass For all 17 listed peptides, each calculated from its sequence.
- Sequence Studio
- Privacy
- No trackers, no cookies No third-party scripts on any page. Stored records are encrypted with AES-256-GCM.
- Privacy policy
- Use
- Laboratory research only Buyers confirm at checkout that they are 21 or over and buying for research.
- Research-use policy
The release rule
Six checks before a lot is listed.
HPLC purity at or above the release minimum. An observed average mass on record. That mass within ±1.0 Da of the average mass calculated from the sequence. A test date, a testing laboratory and the certificate file, each on record. The store checks every lot against all six before it can go on sale.
Try the release checkResearch use only
Laboratory reagents, sold for research only.
Every product is supplied for in-vitro research by qualified buyers aged 21 or over. None is approved as a drug, food, supplement or cosmetic in the form we supply it, and none is for human or veterinary use. We don’t give dosing or usage advice, and we decline or cancel and refund any order that suggests that kind of use.