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An in-depth evaluation of Ibutamoren Mesylate (MK-677) within global pharmaceutical manufacturing and bio-chemical supply chains.
Ibutamoren Mesylate (chemically designated as 2-amino-N-[(1R)-11-benzyloxymethyl-1-(methanesulfonyl)spiro[2H-indole-3,4'-piperidine]-1'-yl]-2-oxoethyl]-2-methylpropanamide methanesulfonate; development code MK-677 or L-163,191) is an orally active, potent, non-peptidic growth hormone secretagogue (GHS) and ghrelin receptor agonist.
By mimicking the endogenous ligand ghrelin, Ibutamoren selectively targets the growth hormone secretagogue receptor 1a (GHS-R1a) in the anterior pituitary gland and hypothalamus. Unlike recombinant human growth hormone (rhGH) therapies or injectable peptide analogs (such as GHRP-6 or CJC-1295), MK-677 stimulates physiological pulsed release of growth hormone (GH) and insulin-like growth factor 1 (IGF-1) without significantly altering cortisol or prolactin levels when synthesized under strict stoichiometric precision.
• CAS Registry Number: 159752-10-3 (Mesylate Salt)
• Molecular Formula: C27H36N4O5S · CH4O3S (C28H40N4O8S2)
• Molecular Weight: 624.77 g/mol
• Appearance: Off-white to fine white crystalline powder
• Purity Benchmark: ≥99.0% (HPLC analytical verification)
The spiro-indoline core structure of Ibutamoren is critical for its receptor selectivity and metabolic stability. The mesylate salt form enhances aqueous solubility and bioavailability, making it a pivotal target molecule for research institutions and Contract Development and Manufacturing Organizations (CDMOs) worldwide.
From a chemical synthesis standpoint, establishing reproducible enantiomeric purity during the spiro-indoline ring closure is the key differentiator separating tier-1 Chinese technical chemical suppliers from secondary re-packagers.
Analyzing macroeconomic shifts, regulatory standards, and supply chain demands across North America, Europe, and Asia-Pacific.
Global pharmaceutical research into metabolic disorders, sarcopenia mitigation, and growth hormone deficiency has driven compound annual growth in non-peptidic GHS procurement. Academic institutions and biotech ventures require consistent multi-kilogram batches with verified analytical data.
International procurement departments no longer accept simple Certificate of Analysis (COA) sheets. Top buyers require 1H-NMR, 13C-NMR, LC-MS, High-Performance Liquid Chromatography (HPLC) profiles, and residual solvent analysis (ICH Q3C guidelines).
To eliminate intermediary margins and guarantee batch traceability, Western buyers are transitioning from localized chemical brokers to primary Chinese manufacturers featuring automated cGMP production infrastructure.
Below is the standardized quality baseline established by leading China Ibutamoren Mesylate manufacturers for international commercial procurement:
| Test Parameter | Standard Specification Criteria | Analytical Methodology | Gentolex Guaranteed Quality |
|---|---|---|---|
| Chemical Appearance | White to Off-White Crystalline Powder | Visual Inspection | Conforms (Pure White Crystalline) |
| Assay Purity (on dry basis) | 98.0% ~ 101.0% | HPLC (External Standard Method) | ≥ 99.2% (Typical Batch: 99.5%) |
| Mass Spectrometry (MS) | Conforms to Structural Mass [M+H]+ 529.27 | ESI-MS Spectrum | Conforms to Standard Molecular Weight |
| 1H-NMR Identification | Structural peaks match reference spectrum | 400 MHz Spectrum Analysis | Conforms (No Unassigned Peaks >0.05%) |
| Loss on Drying (LOD) | ≤ 0.5% | Vacuum Drying at 105°C | ≤ 0.25% |
| Heavy Metals (as Pb) | ≤ 10 ppm | ICP-MS Analysis | ≤ 5 ppm |
| Residual Solvents | Methanol ≤3000ppm, Ethanol ≤5000ppm | Headspace GC-FID | Strict Compliance with ICH Q3C |
How modern Chinese chemical production infrastructures provide competitive advantages through advanced automation, scale, and environmental stewardship.
China’s modern chemical manufacturing clusters utilize automated Distributed Control Systems (DCS) and Programmable Logic Controllers (PLC) to manage critical reaction parameters such as temperature gradients, agitation rates, and reagent dosing. In the production of Ibutamoren Mesylate, precise temperature regulation during the methanesulfonic acid salt formation prevents thermal degradation and side-reaction impurities.
With massive industrial footprints—such as Gentolex's overall factory construction area of 250,000 square meters—manufacturers achieve economies of scale that lower raw material purchasing costs while ensuring batch-to-batch consistency.
A major vulnerability in global fine chemical supply chains is reliance on external starting materials. Leading Chinese chemical companies maintain vertically integrated production pipelines, producing essential precursors (such as Boc-protected amino acid building blocks and specialized piperidine intermediates) in-house.
This integration insulates international clients from global supply chain disruptions, raw material price spikes, and delivery delays, guaranteeing continuous production capacity for high-demand peptides and small molecules.
Modern Chinese manufacturing operates under rigorous environmental regulation. Closed-loop solvent recovery systems and continuous effluent treatment plants (ETP) ensure sustainable, eco-friendly synthesis without risk of factory shutdown orders.
Facilities adhere strictly to ICH Q7 standards, maintaining robust Quality Assurance (QA) and Quality Control (QC) departments equipped with real-time stability chambers, HPLC, LC-MS, and GC equipment.
Direct integration with major international shipping hubs (Shanghai, Ningbo, Shenzhen) combined with custom temperature-controlled packaging guarantees product stability from factory floor to global destination.
Comprehensive pharmaceutical support ranging from API production to customized supply chain solutions.
Our main services focus on supplying peptides APIs and Custom Peptides, FDF license out, Technical Support & Consultation, Product Line and Lab Setup, Sourcing & Supply Chain Solutions. We provide end-to-end support for research laboratories, pharmaceutical developers, and commercial distributors globally.
An overall factory construction area of 250,000 square meters under international standard to offer flexible, scalable and cost-effective solutions for intermediate and bulk chemical synthesis.
Gentolex offers an extensive range of APIs and intermediates for development study and commercial application with cGMP standard from long-term collaborations. Documents and Certificates are supported to customers worldwide.
Tailored scientific solutions for new molecular entities, custom peptide sequences, solid-phase peptide synthesis (SPPS), liquid-phase peptide synthesis (LPPS), and structural elucidation.
For those clients who prefer to avoid the complexity of dealing with multiple points of contact, we provide extra customized procurement services with the most superior and comprehensive supply chain sources.
Gentolex’s goal is to create opportunities connecting the world with better services and guaranteed products. Up to date, Gentolex Group has been serving customers from more than 10 countries, specially, representatives are established in Mexico and South Africa.
Our main services focus on supplying peptides APIs and Custom Peptides, FDF license out, Technical Support & Consultation, Product Line and Lab Setup, Sourcing & Supply Chain Solutions.
Where and how high-purity Ibutamoren Mesylate and peptide APIs are utilized across global life science sectors.
Used extensively by bio-analytical laboratories as reference standards to calibrate HPLC, LC-MS/MS, and spectroscopic analytical assays for growth hormone secretagogue detection.
Employed in cell culture studies evaluating GHS-R1a receptor signaling pathways, intracellular calcium mobilization, and downstream metabolic gene expression.
Serves as a crucial structural intermediate for custom derivative development, medicinal chemistry investigations, and lead compound modification in contract research.
Latest technical publications, research breakthroughs, and API manufacturing developments from our engineering teams.
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View Details →Expert analytical, procurement, and technical insights regarding Ibutamoren Mesylate sourcing from China.
Tier-1 Chinese manufacturers provide Ibutamoren Mesylate with an HPLC purity of ≥99.0%. Premium batches often achieve 99.4% to 99.6% purity, with single individual impurities kept below 0.10% in full compliance with international pharmacopeial standards.
Standard export shipments include a comprehensive Certificate of Analysis (COA), High-Performance Liquid Chromatography (HPLC) chromatograms, Mass Spectrometry (MS) spectra, Proton Nuclear Magnetic Resonance (1H-NMR) reports, and Safety Data Sheets (SDS/MSDS).
For short-term handling, store in a cool, dry place away from direct sunlight at 2°C to 8°C. For long-term storage (>6 months), maintain powder at -20°C in desiccated, airtight containers sealed under nitrogen gas to prevent moisture uptake and mesylate salt hydro-lysis.
We support both small-scale research trial orders (10g – 100g) and industrial bulk orders (1kg – 100kg+). Tailored procurement programs allow clients to scale up batch sizes as their development stage progresses.
Automated reaction controls minimize human error, reduce impurity formation during spiro-indoline ring synthesis, lower batch variance, and optimize production costs, yielding reliable product availability at competitive pricing.
Gentolex provides custom peptide synthesis, API process optimization, specialized salt formation, isotope labeling, and turn-key chemical laboratory/plant setup consulting for partners in over 10 countries.
Complete product offerings engineered to meet rigorous pharmaceutical and research specifications.
