Comparison
Ipamorelin vs Sermorelin
A structural comparison of Ipamorelin and Sermorelin by classification, molecular profile and supplied format.
Ipamorelin vs Sermorelin
This page compares the compounds as materials: what class each belongs to, what the molecule looks like, and how each is supplied. It is a structural and analytical reference — it makes no efficacy claims and contains no protocols.
Side-by-side profile
| Property | Ipamorelin | Sermorelin |
|---|---|---|
| Classification | selective ghrelin receptor (GHS-R) agonist | GHRH (1-29) fragment |
| Other designations | — | — |
| Molecular weight | 711.9 g/mol | See lot COA |
| Reported half-life | ~2 hours | ~10–20 min |
| Supplied vial sizes | 5 mg / 10 mg | 5 mg / 10 mg |
| Purity specification | ≥99% HPLC | ≥99% HPLC |
| Research focus | growth-hormone secretagogue research | endogenous GH-release research |
Reading the comparison
Receptor classification is the meaningful difference between these compounds; vial size and purity specification are supply characteristics, not properties of the molecule. Where molecular weights differ substantially, expect different reconstitution arithmetic for the same nominal vial mass — run each through the peptide calculator.
Individual references
- Ipamorelin
- Sermorelin
Documentation supplied by PX1 Research
Every PX1 lot ships with HPLC purity, LC-MS identity confirmation, residual solvent, moisture (Karl Fischer), sterility and endotoxin data. Lot records are published at /coa and /endotoxin-reports. Synthesis, purification, lyophilization and vial fill are performed in U.S. facilities — see /manufacturing-process.
Research use only. PX1 Research supplies compounds for laboratory and in-vitro research. Nothing on this page is medical advice, a dosing recommendation, or an offer for human or veterinary use.