MK677 Capsules 12.5mg
Research-Grade Peptide · 99%+ Purity · COA Certified

Made in the USA
Ships from the USA
Research-Grade Peptide · 99%+ Purity · COA Certified
Free on orders over $300 · Same-day dispatch before 2PM EST
Strength
Bundle & Save
Save up to 16%
1,323 units in cold chain stock · Ready to ship
23 people have this in their cart right now
For research use only. Not for human or animal consumption.
Certificate of Analysis
Independently 8× tested by ILS Laboratories and/or Kovera Labs.
99.45%
Purity
Passed full QC panel
Full QC panel
8× tested
ISO/IEC 17025 Accredited
All certificates are issued by independent ISO-accredited laboratories. Lot-specific documents are made available to qualified research professionals on request.
Full GHS 16-section Safety Data Sheet for MK-677 (Ibutamoren), prepared per OSHA HazCom 2012 (29 CFR 1910.1200). Includes substance identity, handling & storage, PPE, stability, transport and regulatory information.
CAS No.
159752-10-0
Formula
C₂₇H₃₆N₄O₅S
Mol. Weight
528.66 g/mol
Classification
Not hazardous (GHS)
MK-677 (Ibutamoren) Analysis – PX1 Research
MK-677, frequently referred to as Nutrobal, Oratrope, or Ibutamoren, serves as a robust growth hormone secretagogue and ghrelin receptor agonist. Possessing a molar mass of 528.662, this spiropiperidine compound triggers the pituitary gland to discharge human growth hormone (HGH). While often categorized alongside selective androgen receptor modulators (SARMs), MK-677 is not a peptide; its unique ability to penetrate the blood-brain barrier allows it to act as a neuropeptide within the central nervous system.
Distinguishing MK-677 from Other Growth Hormone Secretagogues
In the realm of research chemicals, MK-677 stands out as a highly potent stimulant for growth hormone production. Unlike alternatives such as GHRP-2 or GHRP-6, a single administration of MK-677 can sustain elevated insulin-like growth factor 1 (IGF-1) levels for a full 24 hours without interfering with the natural pulsatile rhythm of GH secretion. Because it bypasses androgen receptors, it offers a pathway to altered body composition without suppressing testosterone or impacting endogenous androgens. Furthermore, data indicates that MK-677 may act in synergy with peptides like Ipamorelin and Tesamorelin to amplify prospective research outcomes.
Mechanism of Action
MK-677 functions by imitating ghrelin, the hormone responsible for hunger, to induce the secretion of IGF-1 and growth hormone. A primary advantage for experimental settings is its oral bioavailability, which removes the necessity for injections required by most GH peptides. PX1 Research provides high-purity MK-677 backed by rapid transit times, protected payment methods, and premium client assistance, establishing us as a premier provider for research materials.
Documented Research Applications of MK-677
Scientific investigations have highlighted several potential effects of MK-677, such as:
- Elevation of IGF-1 and growth hormone concentrations
- Development of lean muscle and improved body structure
- Adipose tissue reduction
- Augmentation of bone mineral density
- Faster recovery and hypertrophy of muscle tissue
- Support for immune system health
- Enhancement of REM sleep cycles
- Stimulation of appetite
- Mitigation of growth hormone deficiency
- Possible protection against beta-amyloid accumulation in the brain
Significant Discovery from Scientific Literature
- Hormonal Elevation: Studies confirm that MK-677 notably boosts IGF-binding protein-3 (IGFBP-3) and IGF-1, indicating its utility in managing GH deficiencies and promoting anabolic states.
- Physical Composition: Trials involving elderly subjects demonstrated that MK-677 improves muscle mass and bone density. One randomized controlled study showed it helped maintain nitrogen balance during caloric deficits, suggesting a protective effect against muscle wasting.
- Restorative Sleep: Data suggests MK-677 increases the length of REM sleep and decreases the time to reach it, especially in older populations. Its ability to extend Stage 4 sleep is particularly relevant for neurological recovery and cellular repair.
- Chronic Illness Research: In animal models, the compound has shown the ability to lower neuroinflammation and slow the progression of beta-amyloid buildup, pointing toward potential future applications in Alzheimer’s research, though human validation is still required.
Potential Adverse Effects
Researchers should be aware that MK-677 is not granted FDA approval for human use. Observed side effects in studies include increased hunger due to ghrelin mimicry, fluid retention, and fluctuations in blood pressure. There is also a theoretical risk of desensitizing ghrelin receptors with prolonged exposure. This compound is restricted to laboratory environments.
MK-677 Technical Specifications
- CAS Number: 159752-10-0
- Chemical Formula: C27H36N4O5S
- Molar Mass: 528.662 g/mol
- Half-Life: 24 hours
- Class: Growth Hormone Secretagogue, Ghrelin Receptor Agonist
- Storage: Keep in a temperate, dry environment shielded from sunlight to ensure chemical integrity.
Product Features:
- 30ml volume of liquid MK-677 (concentration of 25mg/ml)
- Provided with a 1mL glass dropper for accurate dosing
- Housed in UV-shielded glass to prevent light-induced breakdown
- Safety-sealed for protection
- Consistency guaranteed with less than 5% variance in concentration
- Specialized formula designed to resist evaporation
Disclaimer: MK-677 is a chemical intended solely for laboratory research. It is not intended for consumption, dietary use, or athletic performance enhancement in humans.
References:
- Oral administration of MK-677 increases markers of bone turnover in elderly adults. PubMed
- Design and biological activities of MK-677. PubMed
- MK-677 stimulates the GH/IGF-1 axis in GH-deficient adults. Journal of Clinical Endocrinology & Metabolism
- MK-677 improves sleep quality in humans. PubMed
- MK-677 reverses diet-induced catabolism. PubMed
- MK-677 alleviates amyloid-beta pathology in Alzheimer’s models. PubMed
Why Sourcing from PX1 Research MattersAt PX1 Research, we are committed to excellence in quality, safety, and service. Our MK-677 undergoes strict verification for concentration and purity, ensuring your laboratory results remain reliable. With our secure checkout, quick delivery, and professional support, we are your primary source for sophisticated research compounds.
Investigate the capabilities of MK-677—available now at PX1 Research!
Disclaimer: This product is for research use only. It is not for human use, medical diagnosis, or any form of therapeutic intervention.
Purity (HPLC)
≥99%
Application
For Research Use only
Form
Lyophilized Powder
Storage
-20°C Long Term
Testing
Third Party Tested
Manufacture
USA
99%+ HPLC Purity
Independently verified by accredited US laboratory
Endotoxin-Screened
LAL tested, LPS-free, endotoxin report available
GMP-Certified Manufacturing
USA facility, ISO 9001:2015
Lyophilized for Stability
Shipped cold-packed, intact for reconstitution
Studied for sustained growth-hormone and IGF-1 elevation through ghrelin-receptor activation.
For research use only — not for human or animal consumption.
Reconstitute
Reconstitute with bacteriostatic water for safe, accurate solvation before assay preparation.
Store Properly
Refrigerate the reconstituted solution at 2–8°C and use within 30 days for best stability.
Document Research
Log batch number, concentration and research notes per your laboratory protocol.
High Quality — 99% Purity Guaranteed
Product Quality Guarantee
We are continuously conducting HPLC testing on all of our raw powders as well as our finished products to ensure the quality of what we ship. You can have the product you bought from us independently tested at any HPLC-licensed testing facility — and if the results come back negative, we will refund the following:
HPLC Test Fee
$100
Plus a full refund
Total order amount + shipping
