Sulfapyridine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 144-83-2 |
| Product name | Sulfapyridine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial 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) |
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Documents We Provide for Sulfapyridine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Sulfapyridine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Sulfapyridine
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Antibacterial agent for treating urinary tract infections, gastrointestinal infections, etc. | Used as an intermediate in the synthesis of sulfonamide antibiotics; prepared via diazotization of aniline followed by coupling with a pyridine ring, then hydrolysis and sulfonation. |
| Chemical Intermediates | Raw material for synthesizing other sulfonamide drugs | Applied as a sulfonamido group donor in organic synthesis; employed in nucleophilic substitution or coupling reactions to construct target molecular structures. |
| Biological Research | Used to study the mechanism of action and resistance development of sulfonamide drugs | Utilized as a reference standard or model compound in in vitro antibacterial activity assays and enzyme inhibition studies. |
Manufacturing Quality Control of Sulfapyridine
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Identification | Infrared Spectroscopy (IR) | Compare the sample spectrum with a standard reference spectrum; confirm molecular structure based on characteristic absorption peaks. Suitable for functional group identification of sulfonamide drugs. |
| Ultraviolet-Visible Spectrophotometry (UV-Vis) | Utilize the characteristic absorption of sulfapyridine at specific wavelengths (e.g., around 260 nm) for preliminary identification and as support for content determination. | |
| Assay | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column with methanol-water or buffered mobile phase, and UV detection. Offers high sensitivity and resolution, and is the method recommended by pharmacopoeias. |
| Ultraviolet Spectrophotometry | Quantitative analysis based on the principle that absorbance of sulfapyridine at its maximum absorption wavelength is proportional to concentration. Simple to operate but less specific. | |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Separates the main component from impurities (e.g., degradation products, by-products) using gradient elution, with UV detection to quantify individual impurity levels. |
| Dissolution | Dissolution Testing (Paddle Method / Basket Method) | Use a dissolution apparatus to measure the release behavior of sulfapyridine tablets in a specified medium (e.g., hydrochloric acid solution or buffer), evaluating formulation performance. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Oven Method | Heat the sample to constant weight at a specified temperature and measure weight loss, indicating moisture and volatile impurity content. |
| Sulfated Ash (Residue on Ignition) | Residue on Ignition Test | Measures the weight of inorganic residue remaining after high-temperature ignition of the sample, used to control limits of inorganic impurities. |
| Heavy Metals | Thioacetamide Method (Chinese Pharmacopoeia Method) | In weakly acidic conditions, heavy metals react with thioacetamide to form colored sulfides, which are measured colorimetrically to determine total heavy metal content. |
| Water Content | Karl Fischer Titration | Relies on the quantitative reaction of iodine and sulfur dioxide with water in an anhydrous environment, enabling precise measurement of trace moisture. Widely used for raw material control. |
Technical Specifications of Sulfapyridine
| Test Item | Specification |
|---|---|
| Appearance | White to orange to green crystalline powder |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 192–195 °C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Sulfapyridine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Sulfapyridine
Packaging of Sulfapyridine
Industrial Sulfapyridine Procurement FAQ
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.
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