China Factory Direct
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| CAS number | 934-00-9 |
| Product name | 3-METHOXYCATECHOL |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeSpecialty GradeCosmetic GradeFood 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 |
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| Pharmaceutical Intermediates | Key intermediate for synthesizing Parkinson’s disease therapeutics such as L-DOPA | Produced via selective methylation of catechol; or used as a chiral starting material in multi-step coupling and functional group transformation reactions |
| Fine Fragrances & Flavors | Used to formulate fragrance bases with green, herbal, and subtle fruity notes, suitable for premium perfumes and soap fragrances | Added in trace amounts (typically <0.5%) as a modifier in fragrance formulations; diluted with solvent and blended with other aromatic compounds |
| Organic Synthesis | Building block for synthesizing benzodioxole heterocycles and natural product analogs | Condenses with aldehydes/ketones under acid catalysis to form benzodioxole structures; or undergoes diazotization followed by Sandmeyer reactions to introduce halogen, cyano, and other functional groups |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Assay | High-Performance Liquid Chromatography (HPLC) | Uses a C18 reversed-phase column with methanol-water or acetonitrile-water containing acid (e.g., phosphoric acid or formic acid) as mobile phase. Detection is performed using a UV detector (275–290 nm), and quantification is achieved by external or internal standard method, offering high sensitivity and excellent separation. |
| Purity Analysis | Gas Chromatography-Mass Spectrometry (GC-MS) | After derivatization (e.g., silylation), samples are injected and separated by gas chromatography, followed by mass spectrometric detection. Enables simultaneous qualitative and quantitative analysis of impurities; suitable for volatile and semi-volatile components. |
| Structural Confirmation | Nuclear Magnetic Resonance Spectroscopy (NMR) | Uses ¹H-NMR and ¹³C-NMR to identify molecular structure, confirm substituent positions, and verify chemical identity; commonly used for structural validation of active pharmaceutical ingredients or newly synthesized compounds. |
| Impurity Testing | High-Performance Liquid Chromatography-Mass Spectrometry (LC-MS) | Combines the separation capability of HPLC with the high selectivity of mass spectrometry to detect trace degradation products or synthesis by-products; suitable for related substances analysis. |
| Residual Solvent Analysis | Headspace Gas Chromatography (HS-GC) | Detects residual organic solvents (e.g., methanol, acetone) from manufacturing processes in accordance with pharmacopoeial guidelines (e.g., ICH Q3C). Uses an FID detector to ensure compliance with safety limits. |
| Moisture Content | Karl Fischer Titration | Determines water content precisely based on the reaction of iodine and sulfur dioxide with water in an anhydrous environment; suitable for quality control of moisture-sensitive compounds. |
| Melting Point Determination | Capillary Melting Point Method | Involves heating the sample in a capillary tube and observing the initial and complete melting temperatures to assess purity and crystalline consistency; simple to perform but relatively low precision. |
| Appearance and Color | Visual Color Comparison | Sample color is evaluated by visual comparison with standard color solutions under specified lighting conditions; used for preliminary quality assessment. |
| Heavy Metal Residue | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Detects residual heavy metal elements such as lead, cadmium, and mercury to ensure compliance with pharmaceutical or chemical safety standards. |
| Test Item | Specification |
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| Appearance | Pale-yellow solid |
| Purity | >=98.5% (by LC-MS) |
| Melting Point | 62–66°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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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.