GHK-Cu is the copper-bound form of the tripeptide GHK — three building blocks, glycine, histidine and lysine, holding a single copper atom. It is one of the most recognizable small peptides in the catalog.
We prepare it as a single-lot reference material and send every batch for independent testing, then publish the certificate so the number on the label is one you can check.
The detail worth knowing is that GHK-Cu is often listed with the identity of its copper-free version by mistake — the two are easy to mix up, since one is just the other with copper added. The copper is not incidental; it is part of what this molecule is, and a reference standard should record the copper form rather than default to the peptide alone.
For laboratory research use only. Not for human or veterinary use.