19-Norandrostenedione
Appearance: off-white powder
CAS number: 734-32-7
Packing: 1kg per bag or 5kg per cardboard drum
Brand: Nanjingchem
Origin: Made in China
Contact us
- No.420 Zhonghua Road,Qinghuai District, Nanjing,China 210001
- 008618005174481
- Mr.Sam
- sales@nanjingchem.com
Product Introduction
19-Norandrostenedione (CAS 734-32-7) – High Purity Steroid Pharmaceutical Intermediate
1. Product Basic Introduction
Common Name: 19-Norandrostenedione; Norandrostenedione
Systematic Name: Estr-4-ene-3,17-dione
CAS Registry Number: 734-32-7
EINECS No.: 211-995-8
Molecular Formula: C₁₈H₂₄O₂
Molecular Weight: 272.38 g/mol
Physical Form: White to off-white crystalline powder –
Solubility: Slightly soluble in water, freely soluble in ethanol, methanol and other organic solvents
Product Core Strengths
1. High assay purity ≥98.0%, strictly controlled single unknown impurity limit
2. Low moisture & ash content, no interference in subsequent API synthesis reactions
3. Stable crystal form, good storage stability without agglomeration
4. Automated purification process to reduce heavy metal and residual solvent residues
5. Professional technical team supports customized synthesis process optimization for pharmaceutical clients
2. Full Technical Specifications (TDS Standard Data Table)
| Test Item | Standard Specification | Test Detection Method |
|---|---|---|
| Appearance | White or off-white crystalline powder | Visual inspection |
| Assay Purity | ≥98.0% | HPLC High Performance Liquid Chromatography |
| Moisture Content | ≤0.5% | Karl Fischer Titration |
| Heavy Metals (Pb) | ≤10 ppm | Atomic Absorption Spectroscopy |
| Loss on Drying | ≤0.3% | Vacuum Drying Oven |
| Melting Point | 168–172 ℃ | Capillary Melting Point Tester |
| Related Substances (Total Impurity) | ≤1.0% | HPLC |
| Residual Solvents | Compliant with ICH Q3C pharmaceutical standards | GC Gas Chromatography |
3. Core Pharmaceutical Applications
3.1 Synthetic Precursor for Hormone APIs 19-Norandrostenedione is the fundamental starting material for manufacturing nandrolone, norethisterone, desogestrel and other progestational & anabolic steroid active pharmaceutical ingredients. It undergoes selective reduction, methylation and derivatization reactions to produce finished hormonal drugs used in clinical gynecology, endocrine regulation and hormone replacement therapy.
3.2 Biochemical Research & Laboratory Reference Standard High-purity grade 19-Norandrostenedione serves as analytical reference standard for steroid detection laboratories, forensic testing institutions and anti-doping research labs. It is widely used in LC-MS and HPTLC quantitative analysis of steroid residues in biological samples.
3.3 Fine Chemical Custom Synthesis Our product supports custom derivatization for novel steroid drug R&D projects, cooperating with university pharmacy laboratories and pharmaceutical R&D institutes to develop new low-androgenic progestogen derivatives.
4. Our Professional Manufacturing Factory Profile
- Factory Scale: Total plant area covers 100 acres, 150 full-time employees across production, QC, logistics and sales departments
- R&D Team: 30 dedicated professional chemical technicians and pharmaceutical engineers, equipped with independent synthesis lab, HPLC analytical room and pilot test workshop
- Long-term Scientific Cooperation: Joint research programs with multiple domestic universities and professional scientific research institutes
- Key R&D Research Directions:
- Green, low-waste synthesis routes for pharmaceutical intermediates & steroid raw materials
- High-efficiency purification technology to raise product purity and lower impurity content
- Harmless treatment & resource recovery of production wastewater and solid waste
- Quality Control System: Full-process online monitoring, every batch delivered with official Certificate of Analysis (COA), Technical Data Sheet (TDS) and Safety Data Sheet (SDS)
- Global Export Service: Stable supply to pharmaceutical manufacturers, biotech labs and chemical distributors across Southeast Asia, Europe, Middle East and North America, supporting FOB, CIF and door-to-door logistics solutions
5. Packaging, Storage & Shipping Instructions
<H3> Standard Packaging Options – Industrial bulk export: 25kg fiber drum with double PE inner bags – Small lab test sample: 100g / 500g / 1kg aluminum foil vacuum bags – Custom packaging specifications available upon client’s special demand<H3> Storage Requirements Seal packaging tightly, store in cool, dry, well-ventilated warehouse at temperature below 25℃; isolate from strong oxidants, acids and food-grade chemicals; avoid direct sunlight and high humidity environment. Shelf life reaches 24 months under qualified sealed storage.<H3> Transportation Regulation Classified as general solid chemical for logistics transport; we provide complete customs clearance documents including SDS, COA, packing list and commercial invoice for cross-border shipment.
6. Frequently Asked Questions
Q1: What is the primary usage of 19-Norandrostenedione CAS 734-32-7?
A1: It is a key steroid pharmaceutical intermediate, mainly used as synthetic precursor for nandrolone, norethisterone and other hormonal APIs. It also acts as analytical reference standard for laboratory steroid residue testing and pharmaceutical new drug research.
Q2: What purity grade can your factory provide?
A2: Our standard industrial pharmaceutical grade reaches ≥98.0% HPLC purity. We can customize ultra-high purity grades with stricter impurity limits for high-end biotech and pharmaceutical R&D clients based on specific testing standards.
Q3: Can you provide free lab samples for formulation & synthesis testing?
A3: Yes, we offer small test samples (100g–1kg) for qualified pharmaceutical manufacturers and research labs. Clients only bear international shipping cost, and we attach full COA, TDS and SDS documents with samples.
Q4: How does your factory achieve green production of steroid intermediates?
A4: Our 30-person R&D team collaborates with universities to optimize low-emission synthetic processes, cutting solvent waste generation. We also build professional wastewater and solid waste treatment systems to meet global pharmaceutical environmental compliance standards.
Q5: What official documents can you provide for import customs and production quality inspection?
A5: Each shipment is accompanied by Certificate of Analysis (COA), Technical Data Sheet (TDS), Safety Data Sheet (SDS), commercial invoice and packing list. Third-party independent test reports can be issued upon client request.
Q6: What is your stable monthly production capacity of 19-Norandrostenedione?
A6: Our dedicated steroid intermediate production line maintains continuous stable mass output to fulfill large bulk orders, and we arrange priority expedited production for urgent R&D and pharmaceutical batch demands. Contact our sales team to obtain detailed capacity and delivery lead time information.
7. Request Bulk Quotation & Lab Samples
If you are a pharmaceutical API manufacturer, biochemistry research lab or global pharmaceutical chemical distributor seeking long-term stable supply of 19-Norandrostenedione, send your inquiry including required quantity, target packaging and specific synthesis application.
Our professional sales and pharmaceutical technical team will reply within 24 working hours, offering factory-direct competitive pricing, customized synthetic process technical guidance and complete export customs document support. We sincerely welcome factory audit visits and long-term exclusive cooperation negotiations.
