RH
Exceptional purity for peptide research
We've been sourcing research-grade peptides for several years. Rainbow Peptide's vials consistently pass our HPLC verification — purity exceeds 98% every batch. COA matched our internal testing exactly.
HPLC Verified
>98% Purity
COA Included
SOMA Recovery & Tissue Repair
Ibutamoren (MK-677)
$54.88
MK-677 (Ibutamoren) is an orally active ghrelin receptor agonist and growth hormone secretagogue studied in GH deficiency, muscle wasting, and metabolic aging models. ≥98% purity, CoA. For Research Use Only.
In Stock — Overnight and 2–3 day delivery available
Product Information
MK-677 (Ibutamoren) Research Chemical
MK-677 (Ibutamoren, Nutrobal) is a non-peptide, orally active ghrelin receptor (GHSR-1a) agonist and growth hormone secretagogue. Unlike GHRH analogues (peptides), MK-677 is a small molecule — orally bioavailable and with a long half-life (~24 hours in humans). It is classified separately from SARMs mechanistically but is commonly grouped in the SARM research category.
Research Applications
- GH/IGF-1 axis research — sustained secretagogue stimulation
- Muscle wasting models: MK-677 showed significant lean mass effects in Phase II trials (Nass et al., 2008)
- Bone density research
- Aging and metabolic decline models
- Sleep quality research (GH pulsatility during slow-wave sleep)
Product Specifications
- Purity: ≥98% HPLC confirmed
- Identity: Mass spectrometry (MW: 624.77)
- Certificate of Analysis: Third-party laboratory
- Form: Lyophilized powder, sealed glass vial
For Research Use Only (RUO). Not for human consumption. Note: MK-677 is prohibited in sport under WADA S2.
Frequently Asked Questions
- What is Ibutamoren (MK-677)?
- MK-677 (Ibutamoren) is an orally active ghrelin receptor agonist and growth hormone secretagogue studied in GH deficiency, muscle wasting, and metabolic aging models. ≥98% purity, CoA. For Research Use Only.
- Is Ibutamoren (MK-677) for sale at Rainbow Peptide?
- Yes. Ibutamoren (MK-677) is available for purchase with Certificate of Analysis confirming >98% HPLC purity. Every order Overnight and 2–3 day delivery available. For Research Use Only.
- What purity is your Ibutamoren (MK-677)?
- Rainbow Peptide's Ibutamoren (MK-677) is >98% pure, HPLC verified by an accredited third-party laboratory. A COA is included with every order.
- Is Ibutamoren (MK-677) safe for human use?
- No. Ibutamoren (MK-677) is strictly For Research Use Only (RUO). It is not intended for human consumption and is not intended to diagnose, treat, cure, or prevent any disease.
- How quickly does Ibutamoren (MK-677) ship?
- Overnight and 2–3 day delivery available. Ships in temperature-controlled packaging.
Third-Party Verified
Every Order Ships with a Certificate of Analysis
We don't just claim purity — we prove it. Every batch of Ibutamoren (MK-677) is independently tested by an accredited third-party laboratory before it reaches you. Your COA is linked to your specific lot number.
- HPLC purity analysis — minimum threshold >98%
- Mass spectrometry — molecular weight confirmation
- Lot number traceable to your order
- Endotoxin limits verified — safe for cell-based assays
RAINBOW PEPTIDE LABS CERTIFICATE OF ANALYSIS
Product Ibutamoren (MK-677)
Lot # RP-00189-A
HPLC Purity >98.0% >98.5% PASS
Mass Spec (MW) Confirmed Confirmed PASS
Endotoxin <1 EU/mg <0.5 EU/mg PASS
Visual Inspection White powder White powder PASS
What Researchers Say
Verified purchases from active research labs and scientists
5.00
★★★★★
2 verified reviews MT
Reliable consistency batch to batch
Third order now. Consistent batch-to-batch results matter enormously in long-term research. Certificate of Analysis is detailed with mass spec data. Would not switch sources.
SK
Solid product, shipping was fast
Verified against our reference standards. Purity >98.2% by HPLC. Packaging was appropriate for temperature-sensitive peptides. Will re-order.
