China Factory Direct
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| CAS number | 13708-12-8 |
| Product name | 5-METHYLQUINOXALINE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Intermediates | Used in the synthesis of drug molecules | Employed in organic synthesis reactions, such as substitution or reduction |
| Materials Science | Preparation of functional materials | Applied as ligands in the construction of metal–organic frameworks (MOFs) |
| Agrochemical Intermediates | Synthesis of active pharmaceutical ingredients (APIs) for agrochemicals | Processed via halogenation, amination, and related reactions to yield target compounds |
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color, physical state (e.g., solid or liquid), transparency, and presence of impurities or foreign matter. It should typically appear as a white to pale yellow crystalline powder. |
| Purity | High-Performance Liquid Chromatography (HPLC) | Using a reversed-phase column (e.g., C18) and a UV detector (around 254 nm), the purity is assessed by analyzing the retention time and peak area of the main component. |
| Structure Confirmation | Nuclear Magnetic Resonance Spectroscopy (NMR) | ¹H-NMR and ¹³C-NMR are used to confirm the molecular structure, ensuring that the chemical shifts of hydrogen and carbon atoms match the theoretical structure of 5-methylquinoxaline. |
| Structure Confirmation | Mass Spectrometry (MS) | Electrospray Ionization (ESI) or Electron Impact (EI) mass spectrometry is used to determine the molecular ion peak ([M+H]+ or M•+), verifying that the molecular weight matches C9H8N2. |
| Water Content | Karl Fischer Titration | Accurately measure the water content using a KF titrator, suitable for quality control of active pharmaceutical ingredients or intermediates. |
| Residual Solvents | Gas Chromatography (GC) | According to ICH guidelines, detect residual organic solvents that may be present from the manufacturing process (e.g., methanol, ethanol, acetone, dichloromethane). |
| Melting Point | Melting Point Determination | Determine the melting temperature using a melting point apparatus or capillary method, and compare with literature values (the melting point of 5-methylquinoxaline is approximately 60–63°C). |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | Determine residual heavy metals such as lead, cadmium, mercury, and arsenic to ensure compliance with pharmaceutical or high-purity reagent standards. |
| Content Determination | UV-Visible Spectrophotometry (UV-Vis) | Measure absorbance at characteristic wavelengths (approximately 260–280 nm) and calculate concentration using a standard curve for rapid quantification. |
| Crystal Form Analysis (if applicable) | X-Ray Diffraction (XRD) | If polymorphism is a concern, XRD is used to analyze the crystal structure and ensure batch-to-batch consistency. |
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 74–78°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Heavy Metals | <=10 ppm |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.