China Factory Direct
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| CAS number | 566-19-8 |
| Product name | 7-Keto-dehydroepiandrosterone |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeFood GradeCosmetic 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 |
|---|---|---|
| Pharmaceuticals | Synthesis of steroid hormones | Used as an intermediate in the synthesis of androgenic hormones |
| Cosmetics | Ingredient in cosmetic products | Applied in skin health and anti-aging formulations |
| Biotechnology | Research compound | Applied in bioactivity studies and drug development |
| Food additives | Nutritional supplement | Formulated as an ingredient in dietary supplements |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 240-254 nm, comparing peak area against a certified reference standard. |
| Related Substances | HPLC-DAD or HPLC-MS | Separation and identification of structurally similar impurities using gradient HPLC coupled with diode-array or mass spectrometric detection. |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection to quantify volatile organic solvents based on retention time and response calibration. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine-based reagent to determine water content via stoichiometric reaction. |
| Heavy Metals | ICP-MS | Quantification of trace metal elements (e.g., Pb, Cd, Hg, As) after acid digestion, using inductively coupled plasma mass spectrometry. |
| Residue on Ignition | Gravimetric Analysis | Measurement of non-volatile inorganic residue after high-temperature ashing at 700-800 C and subsequent weighing. |
| Specific Optical Rotation | Polarimetry | Determination of chiral purity by measuring the angle of rotation of plane-polarized light in solution at specified concentration and wavelength. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition measurement using controlled heating of a capillary sample to identify onset and range of solid-to-liquid phase change. |
| pH of Solution | Potentiometric pH Measurement | Electrochemical determination of hydrogen ion activity in aqueous suspension or solution using calibrated glass electrode. |
| Particle Size Distribution | Laser Diffraction | Analysis of dry or wet dispersed sample using light scattering pattern to calculate volume-based particle size distribution. |
| Microbial Limits | Membrane Filtration and Culture | Enumeration of aerobic mesophilic microorganisms and detection of specified pathogens (e.g., E. coli, S. aureus) via selective media cultivation. |
| Organic Volatile Impurities (OVI) | GC-MS | Targeted and untargeted screening of low-molecular-weight organic impurities using gas chromatography coupled with mass spectrometry. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 148.0–152.0 °C |
| Optical Rotation | -85.0 to -78.0 ° (c=1, in CHCl3) |
| Total Impurities | <=2.0% (HPLC) |
| Single Impurity | <=0.5% (HPLC) |
| Water Content (KF) | <=0.5% |
| 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.