Norethisterone API powder
CAS No.:68-22-4
Synonyms:17a-ethynyl-19-nortestosterone;17ALPHA-ETHYNYL-17BETA-HYDROXY-19-NOR-4-ANDROSTEN-3-ONE;17ALPHA-ETHYNYL-19-NORTESTOSTERONE;19-NOR-4-ETHISTERONE;19-NORETHINDRONE;19-NORETHISTERONE;19-NOR-17ALPHA-ETHYNYL-4-ANDROSTEN-17BETA-OL-3-ONE
Molecular formula:C20H26O2
EINECS NO.: 200-681-6
Minimum Order Quantity (MOQ): 10g or 100g (custom packaging available)
Shipping: Worldwide via DHL, FedEx, UPS, or USPS (secure and expedited)
Storage Conditions: Store in a cool, dry place
Shelf Life:≥24 months
Lead Time: 1-3 business days
Warehouse Locations: USA & Germany (ensuring fast regional delivery)
Certificates Provided: COA, HPLC, MSDS, TDS, and other compliance documents upon request
For inquiries or orders, please contact us for competitive pricing and reliable supply.
- Product Description
Xi'an Faithful BioTech Co., Ltd: Your Trusted Norethisterone API powder Manufacturer & Supplier
We are Xi'an Faithful BioTech Co., Ltd, specializing in producing high-standard Norethisterone API powder . From feeding to leaving the factory, we strictly control every pass to ensure that the quality of every batch of goods you get is particularly stable and useful. You can do experiments and production at ease. We rely on solid technology and responsible attitude to ensure continuous delivery, and we will help solve any problems in production at any time.
Norethisterone API powder Introduction
Norethisterone is a synthetic progestogen with the molecular formula of C20H26O2, which usually appears as white or white-like powder. Clinically, it is mainly used for gynecological diseases such as functional uterine bleeding, endometriosis, dysmenorrhea and irregular menstruation.
Norethisterone API powder plays a role by inhibiting the release of hypothalamic gonadotropin, thickening cervical mucus to prevent sperm from passing through, and inhibiting the development of endometrial glands, which is not conducive to the implantation of pregnant eggs.
Specifications
| Item | Specification | Results |
| Characters | White or white-like powder | White powder |
| Assay | 98.0-102.0% | 99.36% |
| Loss on drying | ≤1.0% | 0.15% |
| Residue on ignition | ≤0.1% | 0.05% |
| Related Impurities | ≤0.5% | <0.5% |
| Heavy Metal | ≤10ppm | <10ppm |
| Pb | ≤3ppm | Complies |
| As | ≤2ppm | Complies |
| Hg | ≤0.1ppm | Complies |
| Cd | ≤0.1ppm | Complies |
| Total colonies | ≤1000cfu /g | Complies |
| Molds and Yeasts | ≤100cfu /g | Complies |
| Escherichia coli | Negative | Negative |
| Salmonella | Negative | Negative |
| Staphylococcus | Negative | Negative |
| Conclusion:Conform with enterprise specification | ||
Why Choose Us?
1. Reliable quality: We start with the raw materials, and conduct a comprehensive test on each batch to ensure stable ingredients and consistent performance. Whether you are in the stage of research and development or mass production, we can provide high-standard Norethisterone API powder with the same quality.
2. Professional support: We have an experienced technical team. No matter whether you need to adjust the production process or encounter difficulties in research and development, we can respond in time, provide practical solutions and assist you throughout the process to help you avoid detours and advance efficiently.
3. Real price: By continuously optimizing production efficiency, we can effectively control costs and provide you with more competitive prices. There is no intermediate price increase, which allows you to purchase at a more reasonable cost and truly reduce costs and increase efficiency.
4. Stable supply: We attach importance to your production plan, and can flexibly arrange according to your rhythm, deliver qualified products on time and in quantity, and ensure that your production process is smooth and uninterrupted, and the supply of raw materials is always guaranteed.
5. Clear source: from raw material procurement to finished product delivery, every link is recorded, and the whole process is transparent and traceable. Let you clearly understand the source of the product, and use it with confidence and peace of mind. Email: sales11@faithfulbio.com
Application Areas
1. Medicine and clinical application
As a progestogen component in contraceptives, or as a progestogen single preparation, ovulation inhibition and contraception can be realized.
It can be used for hormone therapy and cycle control of dysfunctional uterine bleeding (DUB), endometriosis, dysmenorrhea, irregular menstruation, etc.
2. R&D and production purposes
As the starting material of API, Norethisterone API powder can be used for formulation process development, amplification and verification of tablets, capsules, long-acting injections and other dosage forms.
Analysis method and quality research: cooperate to complete identification, content/related substances, dissolution/release, impurity spectrum and stability research.
Quality Control:

R&D Results:
Packaging and Transportation:


After-Sales Service:

Qualification Certification:
Transaction Feedback:
Exhibition:

FAQ
Q1:What is the purity of Norethisterone API powder? How to control impurities ?
A1:The purity of our standard products is usually not less than 99.0%. We have a strict quality control system to monitor the known and unknown impurities by HPLC and other methods to ensure that they meet the safety limits stipulated in the Pharmacopoeia.
Q2:Do you provide samples? Are the samples free ?
A2: We are happy to provide samples for potential customers with sincerity. For small batch samples, we may charge a nominal cost. International courier fees usually need to be borne by customers. The samples come from the same production line as the mass products in the future, and the quality is consistent.
Q3:What is the minimum order quantity (MOQ)? How long is the delivery date ?
A3:MOQ: Usually 1 kg. For R&D or sample requirements, we can also provide smaller quantities. Delivery date: For standard products in stock, we can arrange delivery within 1-3 working days after receiving payment. For large orders, the general production cycle is 2 weeks, and the specific time will be specified when the order is confirmed.
Contact Us
We are We are Xi'an Faithful BioTech Co., Ltd, focusing on providing you with excellent quality Norethisterone API powder. From picking raw materials to packaging and delivery, every link is quality-critical. Every batch of goods you receive has stable ingredients and consistent performance, and is practical for research and development and mass production. We guarantee the delivery on time, and we are like reliable technical partners around you. If there is any demand for the project, please follow up and answer questions at any time. Relying on strict quality control and experienced technical team, we go all out to let you use stable and reliable raw materials. Choosing us means choosing a reliable supplier who can cooperate for a long time.
Email: sales11@faithfulbio.com
Together, we can create shared success through partnership!




