MK-677 100MG — Ibutamoren, Growth Hormone Secretagogue
MK-677 100MG — Ibutamoren, Growth Hormone Secretagogue
MK-677, also known as ibutamoren, is a non-peptide small molecule that acts as an agonist at the ghrelin receptor (GHS-R1a). Unlike the peptide secretagogues in this catalog, it is orally bioavailable in study systems precisely because it is not a peptide and is not degraded by peptidases.
Compound data
| Compound | MK-677, ibutamoren |
| Class | Small molecule, ghrelin receptor (GHS-R1a) agonist |
| Not a peptide | Correct — non-peptide secretagogue |
| Compare with | GHRP-2, GHRP-6, ipamorelin, hexarelin (peptide secretagogues) |
| Appearance | White to off-white powder |
| Quantity | 100 mg per vial |
| Purity | 99%+, verified by HPLC and mass spectrometry |
| Presentation | Powder, sealed container |
Storage and handling
- Store the sealed container in a cool, dry place, protected from light and moisture.
- Bring the container to room temperature before opening — the powder is hygroscopic.
- Once in solution, refrigerate at 2-8 °C, protect from light and avoid repeated freeze-thaw cycles.
What you need to reconstitute it
Material is supplied dry and has to be brought into solution before use. Bacteriostatic Water 20 mL is the standard solvent and is sold separately — step-by-step procedure in the reconstitution guide, and a comparison of solvents in bacteriostatic water vs sterile water.
Documentation
Every batch is third-party tested: HPLC for chromatographic purity, mass spectrometry for identity. New to batch documents? See how to read a COA, what 99% purity actually means and net peptide content vs gross weight.
Shipping
Ships worldwide via DHL. Free shipping on orders over $150.
Intended for laboratory and research use only. Not a medicine. Not for human or veterinary use, and not for diagnostic or therapeutic application.