Sermorelin vs Hexarelin
A side-by-side research comparison — classification, molecular weight, mechanism, and how each is verified. For laboratory research use only.
01At a Glance
| Sermorelin | Hexarelin | |
|---|---|---|
| Classification | Endocrine | Endocrine |
| Molecular weight | 3,357.9 g/mol | 887.04 g/mol |
| Also known as | GRF 1-29 | Examorelin |
| 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
Sermorelin
A GHRH(1-29) analog studied for pituitary growth-hormone stimulation.
Sermorelin corresponds to the first 29 amino acids of growth-hormone-releasing hormone — the minimal fully active GHRH fragment. It is studied as a GHRH-receptor agonist that stimulates endogenous growth-hormone synthesis and release from the anterior pituitary.
Hexarelin
A growth-hormone-releasing hexapeptide studied for GHS-R and CD36 signaling.
Hexarelin is a synthetic hexapeptide growth-hormone secretagogue. It activates the ghrelin receptor (GHS-R1a) to stimulate growth-hormone release, and is distinctive in the research literature for additional interaction with the CD36 receptor, studied in cardiac-signaling models.
Research framing only · No human-use claims
03Selecting for a Research Model
Because Sermorelin and Hexarelin are both endocrine research compounds, they are frequently evaluated against one another. Selection depends on the research question, model system, and endpoints. Both are supplied strictly for 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 Sermorelin and Hexarelin?
Sermorelin is a endocrine research compound — A GHRH(1-29) analog studied for pituitary growth-hormone stimulation. Hexarelin is also studied within the endocrine area — A growth-hormone-releasing hexapeptide studied for GHS-R and CD36 signaling. They differ in molecular weight (Sermorelin: 3,357.9 g/mol; Hexarelin: 887.04 g/mol). Both are for laboratory research use only.
What are the molecular weights of Sermorelin and Hexarelin?
Sermorelin: 3,357.9 g/mol. Hexarelin: 887.04 g/mol.
Are Sermorelin and Hexarelin in the same research class?
Yes — both are categorized as Endocrine research compounds.
How are Sermorelin and Hexarelin tested?
Both are analyzed by an independent third-party laboratory (MZ Biolabs, Arizona) on a five-point panel — HPLC purity, mass-spec identity, endotoxin, heavy metals, and sterility — with a batch-specific Certificate of Analysis per lot.