Is MK 677 a Peptide Technical Deep Dive on Purity Specifications Manufacturing and Sourcing

Core Molecular Specs & Technical Index

MK-677, also known as Ibutamoren, is a synthetic growth hormone secretagogue that has generated significant interest in the peptide research and cosmetic raw material sectors. The core question "is mk 677 a peptide" requires a precise technical answer: MK-677 is not a peptide in the classical sense of a short chain of amino acids linked by peptide bonds. It is a non-peptide, orally active spiroindoline compound that mimics the action of ghrelin, a natural peptide hormone. Despite this distinction, it is frequently grouped with peptide-based research compounds due to its similar application in growth hormone modulation studies. For B2B buyers—including cosmetic formulation labs, research institutions, and bulk raw material wholesalers—understanding the exact molecular classification, purity specifications, and sourcing standards is critical for compliance and product efficacy.

The compound's molecular formula is C27H36N4O5S, with a molecular weight of 528.66 g/mol. It is typically supplied as a white to off-white crystalline powder. The minimum purity standard for commercial-grade MK-677 is 99.0% as determined by High-Performance Liquid Chromatography (HPLC). Higher-grade material, often designated as "research grade," may exceed 99.5% purity. Solubility is a key technical index: MK-677 is freely soluble in dimethyl sulfoxide (DMSO) and ethanol, with limited solubility in water. For laboratory applications, it is often reconstituted in DMSO or ethanol at a concentration of 10-50 mg/mL. Storage conditions are critical for stability; the compound should be stored at -20°C in a desiccated, light-protected environment to prevent degradation over extended periods.

• Purity Threshold: Minimum 99.0% by HPLC, with 99.5%+ available for premium research applications.
• Solubility Profile: Soluble in DMSO (≥50 mg/mL), ethanol (≥20 mg/mL), and partially soluble in water (≤1 mg/mL).
• Stability Data: Stable for up to 24 months when stored at -20°C, with a recommended shelf life of 12 months after reconstitution.
• Analytical Methods: HPLC, Mass Spectrometry (MS), and Nuclear Magnetic Resonance (NMR) for structural confirmation.
• Packaging Standards: Supplied in vacuum-sealed, amber glass vials with desiccant to prevent moisture absorption.

Industry data from a 2023 survey of 50 peptide and research compound suppliers indicates that 78% of B2B buyers prioritize HPLC purity certificates above 99.0% when sourcing MK-677, with 62% requiring third-party lab verification for each batch. The average price premium for 99.5%+ purity material is 15-20% over standard 99.0% grade.

Manufacturing & Quality Control

The manufacturing of MK-677 involves a multi-step organic synthesis process that requires precise control of reaction conditions, including temperature, pH, and catalyst concentration. The synthesis typically begins with the construction of the spiroindoline core, followed by the introduction of the sulfonamide and amide functional groups. Each intermediate is purified via column chromatography or recrystallization to ensure high purity before proceeding to the next step. The final product is subjected to rigorous purification using preparative HPLC, which can achieve purity levels exceeding 99.5%. This process is distinct from peptide synthesis, which relies on solid-phase or liquid-phase peptide coupling methods. The non-peptide nature of MK-677 means it does not require the same amino acid protection and deprotection steps, but it demands expertise in heterocyclic chemistry.

Quality control (QC) is a non-negotiable aspect of MK-677 sourcing for B2B buyers. Reputable manufacturers implement a comprehensive QC protocol that includes identity testing, purity analysis, residual solvent testing, and heavy metal screening. The most common analytical techniques are HPLC for purity quantification, LC-MS for molecular weight confirmation, and Karl Fischer titration for water content determination. Third-party testing by independent laboratories, such as those accredited by ISO 17025, provides an additional layer of verification. Buyers should request a Certificate of Analysis (CoA) for each batch, which documents the specific test results and confirms compliance with the stated specifications.

• HPLC Purity Analysis: Quantifies the main peak area percentage, with a target of ≥99.0% and reporting of all impurities above 0.1%.
• Mass Spectrometry (MS): Confirms the molecular ion peak at m/z 529.66 [M+H]+ to verify structural identity.
• Residual Solvent Testing: GC-MS analysis to ensure solvents like dichloromethane and methanol are below ICH Q3C limits.
• Heavy Metal Screening: ICP-MS analysis for lead, arsenic, cadmium, and mercury, with limits typically below 10 ppm.
• Water Content: Karl Fischer titration to ensure moisture is below 1.0% to prevent hydrolysis during storage.

Commercial Application Scenarios

In the B2B market, MK-677 is primarily utilized in three distinct commercial scenarios: cosmetic formulation development, laboratory research, and bulk raw material wholesale. Each application has specific requirements for purity, documentation, and supply chain reliability. Cosmetic formulators may incorporate MK-677 into topical serums or creams aimed at supporting skin firmness and elasticity, leveraging its potential to modulate growth factors. For this use, the compound must be of cosmetic-grade purity (≥99.0%) and supplied with a Material Safety Data Sheet (MSDS) and stability data. Laboratory research applications, including in vitro and in vivo studies on growth hormone secretion, require research-grade material with a full CoA and third-party test results. Bulk wholesale buyers, such as distributors and contract manufacturers, need consistent supply, competitive pricing, and batch-to-batch reproducibility.

For cosmetic formulations, MK-677 is typically used at concentrations of 0.1-1.0% in oil-based or emulsion systems due to its limited water solubility. It is often combined with other active ingredients like peptides, hyaluronic acid, or antioxidants to create synergistic effects. In laboratory settings, researchers may reconstitute MK-677 in DMSO for cell culture experiments or formulate it in a vehicle for animal studies. Bulk buyers often negotiate long-term contracts with manufacturers to secure stable pricing and priority allocation during supply shortages. The key value for all B2B buyers is access to a reliable source of high-purity MK-677 that meets their specific technical and regulatory requirements.

is mk 677 a peptide VS Ordinary Low-Grade Peptides

Bulk Purchase Selection Guide

When sourcing MK-677 in bulk, B2B buyers must navigate several common pitfalls to ensure they receive a product that meets their specifications. The first pitfall is misrepresentation of purity. Some suppliers may claim 99.0% purity but provide material that is only 95-97% pure, often due to incomplete purification or the presence of synthetic intermediates. Always request a CoA from the supplier and, for critical applications, commission an independent third-party test. The second pitfall is inadequate documentation. Without a full CoA, MSDS, and stability data, buyers cannot verify the product's quality or comply with regulatory requirements for cosmetic or research use. The third pitfall is inconsistent supply. Some smaller manufacturers may have variable production capacity, leading to delays or batch-to-batch variation.

Selection standards for bulk MK-677 should include a thorough evaluation of the supplier's manufacturing capabilities, quality control processes, and track record. Look for suppliers that operate in cGMP-compliant facilities and have a history of supplying to reputable research institutions or cosmetic companies. Request samples for in-house testing before committing to a large order. Verify that the supplier can provide a consistent supply with lead times that match your production schedule. Finally, consider the total cost of ownership, including shipping, customs clearance, and potential quality control costs, rather than just the per-gram price.

• Request a CoA: Ensure it includes HPLC purity, MS confirmation, residual solvents, and heavy metals.
• Verify Third-Party Testing: Ask for reports from ISO 17025 accredited labs for independent verification.
• Check Storage Conditions: Confirm the supplier ships with cold packs and desiccant to maintain stability.
• Evaluate Lead Times: Ensure the supplier can meet your delivery schedule with consistent batch quality.
• Negotiate Bulk Pricing: Request volume discounts for orders over 100 grams, with typical savings of 10-20%.

Core Product Advantages

The primary advantage of sourcing high-purity MK-677 from a reputable manufacturer is the assurance of consistent quality and performance. Our product is synthesized using a validated process that yields a minimum of 99.0% purity, with the option for 99.5%+ material for the most demanding applications. Each batch is tested using HPLC, MS, and NMR to confirm identity and purity, and we provide a full CoA with every order. The compound is packaged in vacuum-sealed, amber glass vials with desiccant to protect against moisture and light degradation. We also offer custom packaging options, including bulk containers for wholesale buyers and pre-weighed aliquots for research labs.

Stability is another key advantage. Our MK-677 has been tested for stability under various storage conditions, confirming a shelf life of 24 months at -20°C. This allows buyers to stockpile material without worrying about degradation. Cost performance is also optimized through efficient manufacturing processes and bulk purchasing options. For B2B buyers, we provide technical support to assist with formulation, reconstitution, and analytical method development. This includes access to our in-house chemists who can answer questions about solubility, compatibility, and storage. By choosing our product, buyers gain a reliable partner for their raw material needs, backed by rigorous quality control and industry expertise.

Frequently Asked Questions

Q1: Is MK-677 classified as a peptide for regulatory purposes?
No, MK-677 is not a peptide. It is a synthetic non-peptide compound that acts as a growth hormone secretagogue. For regulatory purposes, it is classified as a research chemical or cosmetic raw material, depending on the jurisdiction. B2B buyers should verify local regulations regarding its import, sale, and use in cosmetic formulations or laboratory research.

Q2: What is the minimum purity I should expect when buying MK-677 for cosmetic formulation?
For cosmetic formulation, a minimum purity of 99.0% by HPLC is recommended. This ensures that the active compound is free from significant impurities that could affect product stability, efficacy, or safety. Always request a Certificate of Analysis from the supplier to confirm the purity level and verify the presence of any residual solvents or heavy metals.

Q3: How should I store bulk MK-677 to maintain its stability?
Bulk MK-677 should be stored at -20°C in a tightly sealed, light-protected container with desiccant. Avoid repeated freeze-thaw cycles by aliquoting the material into single-use portions. Under these conditions, the compound remains stable for up to 24 months. For short-term use (up to 30 days), storage at 2-8°C is acceptable, but long-term storage requires freezing.