Full stated quantity, and nothing rounded up — purity by HPLC and the Cu : peptide molar ratio by ICP-MS, measured and transcribed on a lot-numbered COA for every batch.
Full stated quantity; HPLC purity and Cu : peptide ratio by ICP-MS — measured, not rounded; per-lot COA.
Full quantity; purity + Cu : ratio, not rounded.
Why Cu²⁺ : Peptide Ratio Matters — A 90-Second Quality Check for Formulators. Read our briefing →
Why Cu²⁺ Ratio Matters — a field guide. Read →
On the Cu²⁺ ratio. Read →
The Library
A focused library of characterised copper-bound peptide actives — every entry shipped with a UV-Vis spectrum, Cu²⁺ : peptide molar ratio, and 6-month solution-stability data. Beyond what's stocked here, the custom Cu-peptide programme coordinates made-to-order actives to brand spec.
Methodology
Read the method
Lot Data
Inside the programme
Field Note
Read the note
Applications & buyer fit
Cosmetic contexts only. Finished-product claims are the brand's to substantiate under its destination market's cosmetic rules.
Each active ships with a copper-assay COA, the measured Cu²⁺ : peptide ratio, its UV-Vis / ΔE colour data, and a 25 mg sample on the same packet.
The library
12 characterised Cu-peptides · documented per lot
3-mer
Copper tripeptide-1
3-mer
Copper peptide AHK
3-mer
Tripeptide-1 — the apo-peptide of GHK-Cu
12-mer
The Mn(II) analogue of the GHK metal-tripeptide
24-mer
Copper coordinated by a lysine/proline amino-acid pair
24-mer
Copper coordinated by pyrrolidone carboxylic acid (5-oxoproline)
12-mer
Biotin-GHK — the GHK metallopeptide with a biotin affinity handle
17-mer
Custom · lipidated GHK-Cu for oil-phase systems
18-mer
Custom · co-formulated copper-peptide blend to brand spec
20-mer
Custom · copper-loaded biotin-GHK for streptavidin affinity work
26-mer
Custom · copper coordinated by the carnosine dipeptide
29-mer
Custom · copper coordinated by the glutathione tripeptide