MK 777 – Acetamoren
- Chemical Name: Propanamide, 2-(acetylamino)-N-[(1R)-2-[1,2-dihydro-1-(methylsulfonyl) spiro[3H-indole-3,4′-piperidin]-1′-yl]-2-oxo-1-[(phenylmethoxy)methyl]ethyl]-2-methyl-(ACI)
- Other Name(s): Acetamoren; MK-777; MK 777
- CAS: 950841-87-9
- Powder Purity: >99% HPLC
- Solubility: DMSO, Ethanol, Propylene Glycol
- Molar Mass: ~558.68 g/mol
- Chemical Formula: C₂₈H₃₅FN₄O₅S
- Shelf Life: At least 4 years if properly stored
- Melting Point: 94-96°C
- Appearance: white to off-white powder, bitter
- Biological Half-Life: 8–10 hours and sustained IGF-1 elevation for 18–22 hours.
- Research: 5 – 20 mgs
MK-777, also known as Acetamoren, is a synthetic growth hormone secretagogue and ghrelin receptor (GHS-R1a) agonist. It is structurally related to compounds designed to stimulate growth hormone (GH) and IGF-1 release by mimicking endogenous ghrelin signaling. MK-777 is a research-grade experimental compound and is not clinically approved for medical use.
In research contexts, MK-777 is explored for potential applications related to muscle preservation, recovery, metabolism, sleep regulation, appetite signaling, and age-related muscle decline, although available data comes primarily from vendor literature and anecdotal reports rather than peer-reviewed clinical trials. It is typically supplied as a powder or liquid solution for laboratory and in-vitro/in-vivo experimental use only, not for human consumption.








