4-OXO-CYCLOPENTANE-TRANS-1,2-DICARBOXYLIC ACID DIMETHYL ESTER Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 28269-03-6 |
| Product name | 4-OXO-CYCLOPENTANE-TRANS-1,2-DICARBOXYLIC ACID DIMETHYL ESTER |
| 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) |
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Documents We Provide for 28269-03-6
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 28269-03-6 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 28269-03-6
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Chemicals | Intermediate | Used to construct the key cyclopentane backbone in prostaglandin and derivative synthesis |
| Chemical Reagents | Synthetic Reagent | Applied in Diels–Alder reactions and synthetic studies of heterocyclic compounds |
| Organic Synthesis | Building Block | Serves as a functionalized precursor for structural modification of cyclopentenone derivatives |
Manufacturing Quality Control of 28269-03-6
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification by peak area comparison against a certified reference standard using reversed-phase chromatography and UV detection at 210-230 nm. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using gradient HPLC with UV detection; identification based on retention time relative to reference standards or threshold reporting. |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection to quantify common solvents (e.g., methanol, toluene) based on calibrated response factors. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine-based reagent to determine trace water content via stoichiometric reaction with iodine and sulfur dioxide. |
| Acid Value | Acid-Base Titration | Titration with standardized potassium hydroxide solution in alcoholic medium to determine free carboxylic acid groups by neutralization endpoint detection. |
| Ester Content | 1H NMR Spectroscopy | Quantitative analysis of methyl ester protons (delta ~3.6 ppm) relative to internal standard (e.g., 1,3,5-trimethoxybenzene) for molar ester group determination. |
| Heavy Metals | ICP-OES | Multi-element quantification after acid digestion using inductively coupled plasma optical emission spectroscopy with detection limits <1 ppm for Pb, Cd, Hg, As. |
| Chloride Impurity | Ion Chromatography | Separation and conductivity detection of chloride anions in aqueous extract; quantified against sodium chloride calibration standards. |
| Residue on Ignition | Gravimetric Analysis | Weighing of non-volatile residue after high-temperature ashing (700-800 C) of sample to assess inorganic ash content. |
| Melting Point | Capillary Melting Point Apparatus | Determination of solid-to-liquid phase transition temperature range using controlled heating and visual observation of meniscus movement. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light induced by chiral centers in solution at specified concentration, path length, and wavelength (e.g., 589 nm). |
| Particle Size Distribution | Laser Diffraction | Analysis of dry or dispersed powder using laser scattering principles to calculate volume-based particle size distribution (D10, D50, D90). |
Technical Specifications of 28269-03-6
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 128–132°C |
| Identification (IR) | Conforms to reference spectrum |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic mild ester odor |
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 28269-03-6
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of 28269-03-6
Industrial 28269-03-6 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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