China Factory Direct
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| CAS number | 237429-33-3 |
| Product name | 4-Mercaptophenylboronic acid |
| 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 | Intermediates for drug discovery | Used to design and synthesize targeted protease inhibitors (e.g., serine protease inhibitors) via reversible covalent binding between boronic acid groups and diol structures. |
| Biochemistry | Glycoprotein isolation and purification | Immobilized onto solid-phase supports (e.g., agarose gel) to prepare affinity chromatography columns; selectively enriches and isolates glycoproteins or glycopeptides through ester bond formation between boronic acid and cis-diol groups. |
| Analytical Chemistry | Sensor fabrication | Modified onto gold electrode surfaces or fluorescent probes as a molecular recognition element; employed in electrochemical or optical sensors—via thiol-based self-assembly—to detect polyhydroxy compounds (e.g., glucose, catecholamines). |
| Materials Science | Synthesis of smart hydrogels | Applied to prepare dynamic covalent hydrogels via crosslinking with polyhydroxy compounds; alternatively, utilized in click chemistry reactions (e.g., thiol–ene) for functional material modification and derivatization. |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies 4-mercaptophenylboronic acid content by UV absorbance at 254 nm using a reversed-phase C18 column and external standard calibration. |
| Related Substances | HPLC-UV | Detects and quantifies structurally related impurities (e.g., boronic acid esters, oxidation products) via gradient elution and peak area comparison. |
| Residual Solvents | GC-FID | Measures residual solvents (e.g., methanol, THF, ethyl acetate) using flame ionization detection after headspace or direct injection. |
| Water Content | Karl Fischer Titration | Determines water content by coulometric or volumetric titration based on the stoichiometric reaction of iodine with water in pyridine/methanol medium. |
| Heavy Metals | ICP-MS | Quantifies trace heavy metals (Pb, Cd, Hg, As, etc.) by measuring elemental ion signals after microwave-assisted acid digestion. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after incineration at 700-800 C and cooling in a desiccator. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid using capillary tube and calibrated heating block. |
| Appearance | Visual Inspection | Assesses physical state, color, and presence of foreign particles under controlled white light against standard reference samples. |
| Sulfur Content | Combustion IC | Quantifies total sulfur by high-temperature combustion followed by ion chromatographic detection of sulfate ions. |
| Boron Content | ICP-OES | Measures total boron concentration via atomic emission intensity at characteristic wavelengths (e.g., 249.773 nm) after acid digestion. |
| Acid Value | Acid-Base Titration | Determines free carboxylic acid impurities (if present) or acidic degradation products by titration with standardized NaOH using phenolphthalein indicator. |
| Particle Size Distribution | Laser Diffraction | Measures particle size distribution in dry powder form using Mie scattering theory and optical detection of diffracted laser light. |
| Test Item | Specification |
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| Appearance | White to off-white crystalline solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 178–182°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=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.