China Factory Direct
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| CAS number | 57097-81-1 |
| Product name | 3-BROMO-5-METHYL-1H-PYRAZOLE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial Grade |
| Packaging | 25KG/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 Chemicals | Pharmaceutical Intermediate | Serves as a building block for synthesizing biologically active pyrazole derivatives, such as analgesic and anti-inflammatory agents. |
| Agrochemicals | Agrochemical Intermediate | Used in the synthesis of insecticidal or fungicidal molecules containing a pyrazole ring. |
| Scientific Research | Organic Synthesis Reagent | Leverages the reactivity of the bromine atom to construct complex molecular frameworks via coupling reactions (e.g., Suzuki coupling) or nucleophilic substitution reactions. |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Identification Test | Infrared Spectroscopy (IR) | Determine the infrared absorption spectrum of the sample and compare it with the standard reference spectrum to confirm the presence of characteristic functional groups of 3-bromo-5-methyl-1H-pyrazole (e.g., N–H, C–Br, C=N) based on matching absorption peaks. |
| Proton Nuclear Magnetic Resonance (¹H NMR) | Acquire the ¹H NMR spectrum of the sample in deuterated solvent; assess molecular structure by analyzing chemical shifts, integration areas, and coupling constants to confirm consistency with the target compound. | |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with methanol/water or acetonitrile/water as mobile phase, and UV detection (typically at 220–260 nm). Quantify the main component using external standard or internal standard method. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Employ gradient elution to separate the main peak from potential impurities (e.g., unreacted starting materials, by-products, degradation products). Calculate impurity levels using area normalization or corrected factor methods. |
| Water Content | Karl Fischer Titration | Determine moisture content using either the volumetric or coulometric Karl Fischer method, suitable for thermally unstable or hygroscopic organic compounds. |
| Residual Solvents | Gas Chromatography (GC) | Utilize headspace or direct injection with polar or non-polar capillary columns and FID detection to quantify residual organic solvents (e.g., methanol, dichloromethane, DMF) from synthesis processes. |
| Melting Point | Capillary Melting Point Method | Load dried sample into a melting point capillary tube and observe the temperature range from initial melting to complete melting under controlled heating rate. Compare with literature values (approximately 110–114 °C) to assess purity. |
| Appearance and Color | Visual Color Comparison Method | Compare the sample visually under specified lighting conditions against standard color solutions to determine whether it meets the requirement of white to off-white crystalline powder. |
| pH Value (if formulated into solution) | pH Meter Measurement | Dissolve the sample in a specified concentration of aqueous solution or appropriate solvent system, then measure pH using a calibrated pH meter to evaluate potential acidic or basic impurities. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 102-106°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.