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Copper peptides and copper blends: 10 vials per kit, from one kit, with the batch COA. How we quote →
10 vials per kit, from one kit. How we quote →
10 vials per kit. How we quote →
Copper-peptide knowledge center
Five topics buyers and laboratories ask about: GHK-Cu or AHK-Cu, copper binding and the blue vial, stability and storage, reading the COA, and choosing a copper blend. Every number links to PubChem, a paper or our catalogue.
01
GHK-Cu or AHK-Cu
GHK-Cu and AHK-Cu side by side: sequence, formula, molecular weight, theoretical copper, CAS records and the vial strengths we list, with PubChem sources.
Read02
Copper binding and the blue vial
Copper(II) bound in GHK-Cu absorbs near 606 nm, so the powder is blue. What shifts the colour, why AHK-Cu and the GHK-Cu blends are blue too, and its limits.
Read03
Stability and storage
How our copper peptides and blends are stored — 2–8 °C, away from light and moisture — why they ship freeze-dried, and what pH and other ligands do to GHK-Cu.
Read04
Reading a copper-peptide COA
What each line of a copper-peptide COA tells you — appearance, MS identity, HPLC purity, assay, fill, endotoxin — where copper fits, and what a blend changes.
Read05
Choosing a copper blend
GLOW, KLOW and the 50 mg GHK-Cu, TB-500, BPC-157 blend side by side: peptides per vial, GHK-Cu share, theoretical copper, strengths and the batch documents.
ReadGuide
How to check a GHK-Cu batch: colour, copper ratio, CAS and the COA, line by line
Read a GHK-Cu certificate of analysis line by line, calculate the Cu²⁺ : peptide ratio from two numbers, and spot the red flags of a mislabelled batch.
Guide
GHK-Cu molecular weight and CAS: which form is 340.4, 401.9, 402.9, 462.0 or 742.3?
401.91, 402.92, 742.3 or 340.38 g/mol? Which GHK-Cu form each molecular weight and CAS number describes, with PubChem sources, and how to use them on a COA.
Compare
GHK-Cu vs GHK: the copper complex and the free peptide compared
GHK-Cu and GHK side by side: CAS, formula, molecular weight, copper content, colour, UV-Vis and how to tell them apart on a COA.
Compare
GHK-Cu 1:1 and 2:1: what the ratio on a COA means, and how to compare offers
What differs between GHK-Cu offers: peptide-to-copper ratio (1:1 or 2:1), as-is copper, purity against content, colour, and the documents to ask for.