China Factory Direct
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| CAS number | 734-32-7 |
| Product name | Norandrostenedione |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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 R&D | Intermediate in the synthesis of steroid hormones, used to prepare estrogens, progestogens, and other pharmaceuticals | Chemical synthesis via reduction, oxidation, or substitution reactions to yield target hormone molecules |
| Biochemical Research | Research probe for studying endogenous androgen metabolism and steroid metabolic pathways | Enzyme-catalyzed transformation or sample preparation prior to mass spectrometry or chromatographic analysis |
| Sports Science (Prohibited) | Historically misused to enhance muscle anabolism (prohibited by the World Anti-Doping Agency) | Illicit synthesis followed by oral administration or injection (not recommended and unlawful) |
| Chemical Reagents | Reference standard or control material for developing and validating steroid detection methods | Calibration and quantification in HPLC or GC-MS analysis |
| Detection Item | Common Detection Methods | Method Overview |
|---|---|---|
| Identification | Infrared Spectroscopy (IR) | Determines the infrared absorption spectrum of the sample and compares it with standard spectra to confirm functional groups and molecular structural characteristics. |
| Nuclear Magnetic Resonance Spectroscopy (NMR) | Uses ¹H-NMR or ¹³C-NMR to analyze the chemical environment of hydrogen and carbon atoms, used for structural confirmation. | |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Utilizes reversed-phase columns (e.g., C18) and UV detection (around 254 nm), quantifying the main component using external or internal standard methods. |
| Gas Chromatography-Mass Spectrometry (GC-MS) | Applicable to volatile samples; after derivatization, separation and detection are performed, with qualitative and quantitative analysis based on retention time and mass spectral fragments. | |
| Purity / Related Substances Testing | High-Performance Liquid Chromatography (HPLC) | Separates the main peak from impurity peaks via gradient elution; calculates impurity peak areas to assess sample purity and related substances limits. |
| Residual Solvents | Gas Chromatography (GC) | Follows pharmacopoeial methods (e.g., Chinese Pharmacopoeia, USP) to detect organic solvents (e.g., methanol, acetone) potentially remaining from manufacturing processes. |
| Moisture Content | Karl Fischer Titration | Determines water content chemically or via coulometric method, suitable for trace moisture analysis. |
| Melting Point | Capillary Melting Point Method | Sample is placed in a capillary tube and heated; initial and final melting temperatures are observed, used for preliminary identification and purity assessment. |
| Specific Rotation | Polarimeter Method | Measures optical rotation of sample solution under specified wavelength (e.g., sodium D line, 589 nm) and temperature, used for identification of chiral substances. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | Detects residual heavy metals such as lead, cadmium, and mercury in samples to ensure compliance with safety limit requirements. |
| Test Item | Specification |
|---|---|
| Appearance | White powder |
| Purity | >=98.5% (GC-MS) |
| Melting Point | 142–146 °C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Identification (NMR) | Conforms to reference standard |
| Optical Rotation | +137° to +141° (c=1, in CHCl₃) |
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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.