First order

How to buy research peptides

Short version: a named lot, an HPLC file you can open before checkout, a 10 ml solvent vial, and a Union address. Nothing on this page is a protocol.

1. What these vials are
Lyophilised amino-acid chains, or in two cases small molecules, sold as chemically defined reagents for in-vitro work. They are not medicines, not food, not cosmetics in this catalogue. Helix will not tell you how to inject anything.
2. How to spot a real supplier
Batch-specific CoA, a lab name, a date, HPLC purity as a number not a badge, and mass spectrometry that matches the CAS on the same page. If GHK is not acetate, or TB-500 is sold as a 17–23 fragment when the certificate is the 43-aa parent, walk away.
3. How to read our CoA
Five panels, not one percentage. Identity is ESI-MS against the mass on the SKU. Purity is HPLC-UV at 214 nm — the tall peak is the compound, the small rises are everything else. Net peptide content is not HPLC purity. Endotoxin is LAL on the cake as a reagent spec, not a licence to inject. Elemental impurities are ICH Q3D. Search the lot or the compound on certificates. The QR on the box hits the same record. A rejected BPC lot at 97.1 % HPLC is still on the book and was not sold.
4. What a first carton usually holds
One or two 3 ml lyophilised vials plus sterile water if you will reconstitute in the lab. WELCOME10 is 15% over €40; we add the 10 mL solvent on that first order. Syringes are not sold here.
5. Storage
Unopened lyophilisate: cool, dry, dark. After the lab has added solvent: follow the lot file, typically 2–8 °C, and discard on the date in that file. We ship ambient from Union stock because the cake is dry.