Epitalon vs GHK-Cu
A side-by-side research comparison — classification, molecular weight, mechanism, and how each is verified. For laboratory research use only.
01At a Glance
| Epitalon | GHK-Cu | |
|---|---|---|
| Classification | Genomic | Genomic |
| Molecular weight | 390.39 g/mol | 404.92 g/mol |
| Also known as | Epithalon; Epithalamin tetrapeptide | Copper tripeptide-1 |
| Purity spec | ≥99% HPLC | ≥99% HPLC |
| Verification | MZ Biolabs · 5-panel | MZ Biolabs · 5-panel |
| Use | Research Use Only | Research Use Only |
02How They Differ
Epitalon
A synthetic tetrapeptide studied primarily for telomerase activity and chromosomal stability.
Epitalon is a short Ala-Glu-Asp-Gly tetrapeptide modeled on the pineal peptide epithalamin. Its most-studied research property is induction of telomerase (hTERT) expression, with published assays reporting telomere elongation in cultured somatic cells.
GHK-Cu
A naturally occurring copper-binding tripeptide studied for gene expression and ECM remodeling.
GHK-Cu is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine, a sequence found in human plasma. Research attributes much of its activity to copper-ion delivery and to broad modulation of gene expression — transcriptomic studies report changes across thousands of genes, many related to extracellular-matrix (ECM) remodeling and collagen synthesis.
Research framing only · No human-use claims
03Selecting for a Research Model
Because Epitalon and GHK-Cu are both genomic research compounds, they are frequently evaluated against one another. Selection depends entirely on the research question, model system, and endpoints being measured. Both compounds are supplied strictly for in-vitro and laboratory research and are not for human or veterinary use.
Whichever you select, every Ethos Bio lot is verified the same way — a five-point independent panel with a batch-specific Certificate of Analysis. See how we test →
04FAQ
What is the difference between Epitalon and GHK-Cu?
Epitalon is a genomic research compound — A synthetic tetrapeptide studied primarily for telomerase activity and chromosomal stability. GHK-Cu is also studied within the genomic area — A naturally occurring copper-binding tripeptide studied for gene expression and ECM remodeling. They differ in molecular weight (Epitalon: 390.39 g/mol; GHK-Cu: 404.92 g/mol) and primary mechanism. Both are supplied for laboratory research use only.
What are the molecular weights of Epitalon and GHK-Cu?
Epitalon has a molecular weight of 390.39 g/mol. GHK-Cu has a molecular weight of 404.92 g/mol.
Are Epitalon and GHK-Cu in the same research class?
Yes — both Epitalon and GHK-Cu are categorized as Genomic research compounds, which is why they are often compared.
How are Epitalon and GHK-Cu tested?
Both are analyzed by an independent third-party laboratory (MZ Biolabs, Arizona) on a five-point panel — HPLC purity, mass-spectrometry identity, endotoxin, heavy metals, and sterility — with a batch-specific Certificate of Analysis provided per lot.