REICHSTEIN'S SUBSTANCE S 21-ACETATE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 640-87-9 |
| Product name | REICHSTEIN'S SUBSTANCE S 21-ACETATE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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 REICHSTEIN'S SUBSTANCE S 21-ACETATE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk REICHSTEIN'S SUBSTANCE S 21-ACETATE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of REICHSTEIN'S SUBSTANCE S 21-ACETATE
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Intermediate in the synthesis of glucocorticoid drugs | Chemical synthesis reactions, including esterification, reduction, and hydroxyl protection |
| Pharmaceutical Development | Research and development of novel steroid-based drugs | Multi-step organic synthesis and structural modification |
| Biochemical Research | Studies on steroid hormone metabolism and mechanism of action | Isotopic labeling, analytical testing, and biochemical assays |
Manufacturing Quality Control of REICHSTEIN'S SUBSTANCE S 21-ACETATE
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification by comparison of peak area against a reference standard using reversed-phase chromatography and UV detection at 240 nm. |
| Related Substances | HPLC-UV | Separation and quantification of structurally similar impurities using gradient HPLC with UV detection. |
| Residual Solvents | GC-FID | Detection and quantification of volatile organic solvents based on retention time and flame ionization response. |
| Water Content | Karl Fischer Titration | Electrochemical titration using iodine, sulfur dioxide, and pyridine in methanol to determine water content. |
| Heavy Metals | ICP-MS | Multi-element quantification of toxic metals (e.g., Pb, Cd, Hg, As) via plasma ionization and mass spectrometric detection. |
| Residue on Ignition | Gravimetric Analysis | Determination of inorganic ash content after high-temperature incineration and weighing of residual material. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation of plane-polarized light induced by chiral molecules in solution at specified concentration and path length. |
| Melting Point | Capillary Melting Point Apparatus | Thermal determination of solid-to-liquid phase transition using controlled heating and visual observation. |
| pH of Solution | Potentiometric pH Measurement | Determination of hydrogen ion activity in aqueous suspension using calibrated glass electrode and reference electrode. |
| Particle Size Distribution | Laser Diffraction | Analysis of particle size by measuring angular variation in intensity of laser light scattered by dispersed particles. |
| Microbial Contamination | Membrane Filtration | Enumeration of aerobic microorganisms by filtration, membrane transfer to culture media, and colony counting after incubation. |
| Sterility | Direct Inoculation | Inoculation of sample into soybean-casein digest and fluid thioglycollate media followed by incubation and growth observation. |
Technical Specifications of REICHSTEIN'S SUBSTANCE S 21-ACETATE
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.5% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 127-131°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Optical Rotation | +130° to +136° (c=1, in chloroform) |
| Heavy Metals | <=20 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 REICHSTEIN'S SUBSTANCE S 21-ACETATE
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of REICHSTEIN'S SUBSTANCE S 21-ACETATE
Safety Information of REICHSTEIN'S SUBSTANCE S 21-ACETATE
| Pictograms |   |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of REICHSTEIN'S SUBSTANCE S 21-ACETATE
Industrial REICHSTEIN'S SUBSTANCE S 21-ACETATE 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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