Premium MK677 UK Buy (Ibutamoren) – UK Research Grade
If your laboratory facility is looking for an mk677 uk buy option for growth hormone secretagogue or metabolic receptor assays, our inventory provides certified reference-grade material. Chemically designated as Ibutamoren Mesylate (L-163,191), MK-677 is a potent, non-peptide selective agonist of the ghrelin receptor (GHS-R1a), widely evaluated in endocrinology research for its ability to mimic the GH-stimulating action of endogenous ghrelin.
When researchers choose to mk-677 buy online for laboratory trials, verification of compound purity and identity is essential. Our domestic inventory supplies >=99% HPLC-verified chemical purity, complete lot-specific analytical documentation, and fast UK tracked shipping.
Technical Specifications & Chemical Profile
Our reference-grade MK-677 (Ibutamoren Mesylate) chemical reference material is synthesized in strict compliance with analytical standards:
| Attribute | Analytical Specification |
| Chemical Name | MK-677 / MK 677 / Ibutamoren Mesylate |
| IUPAC Name | 2-amino-2-methyl-N-[(2R)-1-(1-methylsulfonylspiro[2H-indole-3,4′-piperidine]-1′-yl)-1-oxo-3-phenylpropan-2-yl]propanamide;methanesulfonic acid |
| CAS Registry Number | 159752-10-3 (Mesylate salt) / 159634-47-6 (Free base) |
| Molecular Formula | Mesylate salt |
| Molecular Weight | 628.8 g/mol |
| Purity Grade | >= 99.0% (Verified via HPLC & Mass Spectrometry) |
| Physical Form | Fine white to off-white crystalline powder |
| Solubility Profile | Soluble in DMSO (>25 mg/mL), Water (>10 mg/mL), and Ethanol |
| Storage (Unopened) | Store desiccated at -20^C (protected from UV light exposure) |
Mechanism of Action & Research Applications
In metabolic and endocrine research literature, MK677 uk buy is evaluated for its distinct non-peptide interaction with pituitary and hypothalamic receptors:
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Selective GHS-R1a Receptor Agonism: MK-677 binds selectively to the growth hormone secretagogue receptor 1a (GHS-R1a), triggering a sustained elevation in pulsatile growth hormone (GH) release without disrupting baseline cortisol or thyroid hormone axes.
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Sustained IGF-1 Induction: Long-term in vitro and animal models demonstrate that exposure to MK-677 drives a persistent increase in circulating Insulin-like Growth Factor 1 (IGF-1) concentrations, making it a valuable reference compound for nitrogen balance and muscle wasting research.
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Somatotroph Pulsatility: Unlike peptide growth hormone secretagogues that require systemic injection pathways, MK-677 demonstrates high oral bioavailability in pre-clinical pharmacokinetics, sustaining elevated GH levels over extended sampling intervals.
Laboratory Handling & Preparation Guidelines
To preserve compound stability and maintain accurate dosing in analytical assays:
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Equilibration: Allow frozen containers of MK-677 to adjust to ambient room temperature before opening to prevent atmospheric moisture condensation inside the vial.
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Solubilization: MK-677 mesylate salt exhibits good solubility in aqueous media and organic solvents. Dissolve raw powder in high-purity DMSO or sterile laboratory-grade water for liquid stock preparations.
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Agitation: Gentle vortexing or mild ultrasonic bath treatment (<35^C) can accelerate full dissolution in target solvents.
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Storage Conditions: Store liquid stock solutions frozen at -20^C in light-protected glass containers to prevent degradation.
Frequently Asked Questions
Is MK-677 classified as a SARM?
No. While frequently grouped alongside Selective Androgen Receptor Modulators (SARMs) in commercial shorthand, MK-677 does not bind to androgen receptors. It is chemically classified as a non-peptide growth hormone secretagogue (GHS-R1a agonist).
What analytical documentation is provided when I buy MK-677 online?
Every order includes access to a lot-specific Certificate of Analysis (COA) containing High-Performance Liquid Chromatography (HPLC) chromatograms confirming >=99% purity and Mass Spectrometry (MS) identity verification.
How should raw MK-677 powder be stored long-term?
Store raw, dry MK-677 chemical reference powder sealed under desiccated conditions at –20^C in a dark environment.


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