All notes
Buying · May 30, 2026 · 3 min read
What a copper-peptide batch file should contain
The documents that let you check a GHK-Cu or AHK-Cu batch before and after you buy it: the batch COA, the tests on it, and what to request on top.
The COA itself
- The product name and the CAS of the form you ordered (89030-95-5 for GHK-Cu).
- A batch number matching your vials, and a test date.
- Who issued it.
Tests on every batch COA
- HPLC purity, against the purity specification.
- MS identity.
- Bacterial endotoxin.
- Fill: the measured amount per vial against the label.
Copper data to request when you need it
- Copper content by ICP or AAS.
- Peptide content, water and acetate.
- The Cu²⁺ : peptide ratio calculated from them.
- UV-Vis band position (near 606 nm for GHK-Cu).
Independent reports
A report from an independent laboratory names the laboratory, the report number and the batch tested. Low-resolution first pages of the reports we hold are on our home page, the batch-data page and the product pages; the full report is sent by sales on request.
References
- PubChem CID 71587328 — prezatide copper (CAS 89030-95-5) — CAS 89030-95-5 belongs to the copper complex; PubChem records it as the singly protonated form, 402.92 g/mol
- Bossak-Ahmad et al., Int J Mol Sci 2020 — ternary Cu(II) complex with GHK — d–d band of Cu(GHK) at 605–606 nm; aqua copper absorbs near 816 nm
GHK-Cu vials, 10 per kit
Ask for a written quote by the kit and the COA of the batch you would receive.