China Factory Direct
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| CAS number | 666816-98-4 |
| Product name | 8-bromo-7-(but-2-ynyl)-3-methyl-1H-purine-2,6(3H,7H)-dione |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeReagent 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 |
|---|---|---|
| Pharmaceuticals | Synthetic intermediate for cardiovascular drugs | Specific functional groups are introduced via substitution reactions to enable further synthesis of target compounds |
| Pesticides | Synthetic precursor for pesticide active ingredients | Functional group transformations and structural modifications yield biologically active target products |
| Chemical Research | Structural building block in synthetic chemistry research | Serves as a key synthon in the construction of complex molecules, enabling molecular elaboration through coupling reactions |
| Detection Item | Common Detection Methods | Method Overview |
|---|---|---|
| Purity Analysis | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column with acetonitrile/water or methanol/water as the mobile phase, detected by UV detector (typically at 254 nm). The retention time is compared with that of reference standards to quantitatively determine the main component content. This method effectively separates impurities and by-products. |
| Structure Elucidation | Nuclear Magnetic Resonance Spectroscopy (NMR) | ¹H NMR and ¹³C NMR are used to confirm molecular structure, providing information on chemical shifts, coupling constants, and integration of hydrogen and carbon atoms, serving as a key technique for structural identification. |
| Molecular Weight Determination | Mass Spectrometry (MS, LC-MS or ESI-MS) | Electrospray ionization mass spectrometry (ESI-MS) or atmospheric pressure chemical ionization mass spectrometry (APCI-MS) is used to obtain molecular ion peaks ([M+H]⁺), confirming whether the measured molecular weight matches the theoretical value (e.g., calculated molecular formula C₁₂H₁₀BrN₄O₂, molecular weight approximately 297.13). |
| Content Determination | Gas Chromatography (GC-MS, suitable for volatile derivatives) | If the compound is derivatized to become volatile, GC combined with MS enables high-sensitivity quantitative analysis; however, thermal stability must be carefully considered. |
| Impurity Testing | HPLC-UV/MS Coupled Method | Multi-wavelength detection or mass spectrometry-based identification allows qualitative and quantitative analysis of process impurities and degradation products, meeting ICH Q6A requirements. |
| Residual Solvent Testing | Gas Chromatography (GC-FID/GC-MS) | Utilizes headspace or direct injection to detect residual organic solvents (e.g., acetonitrile, acetone, toluene) from synthesis processes, complying with ICH Q3C guidelines. |
| Melting Point Determination | Micro Melting Point Apparatus Method | Determines the melting range by observing the sample's melting behavior during heating, serving as one of the physical property indicators to assist in assessing purity and crystalline state. |
| Ultraviolet-Visible Spectroscopy Analysis | UV-Vis Spectroscopy | Scans in the 200–400 nm range to obtain characteristic absorption peaks, used for preliminary identification and supporting purity assessment, especially suitable for xanthine-class compounds containing conjugated systems. |
| Test Item | Specification |
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| Appearance | White solid |
| Purity | >=98.0% (LC-MS) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 148–152°C |
| Identification (NMR) | Consistent with structure |
| Residue on Ignition | <=0.1% |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.