Keywords

• Norethindrone
• 17ALPHA-ETHYNYL-19-NORTESTOSTERONE
• 17-alpha-ethynyl-17-beta-hydroxyoestr-4-en-3-one

Quick Details

• ProName: Norethindrone 68-22-4
• CasNo: 68-22-4
• Molecular Formula: C20H26O2
• Appearance: White
• Application: Progesterone drugs, for irregular mens...
• DeliveryTime: 7-10 working days
• PackAge: In plastic outside weave or according ...
• Port: port of Qingdao、port of Tianjin
• ProductionCapacity: 500 Kilogram/Week
• Purity: >99%
• Storage: -15°C
• Transportation: We ship goods via DHL, Fedex, UPS, TNT...
• LimitNum: 1 Kilogram
• Shelf Life: Two years

Superiority

Our Advantage 

Rich Experience 
Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. 

Quality service 
Company cooperates with research institutes. We strictly control the process of raw materials up to finished product. 
  
24 hour service 
Quick and clear response to customers questions. Warm after sale service, we will help to solve the problems in your usage. 

High quality 
Dedicated to serving customers first, we provide reasonable prices, high quality products. 

Details

Our advantage:

1. High quality with competitive price:

1) Standard:BP/USP/EP/Enterprise standard

2) All Purity≥99%

3) We are manufacturer and can provide high quality products with factory price.

 2, Fast and safe delivery

1) Parcel can be sent out in 24 hours after payment.Tracking number available

2) Secure and discreet shipment.Various transportation methods for your choice.

3) Customs pass rate ≥99%

4) We have our own agent/remailer/distributor who can help us ship our products very fast and safe,

and we have stock in there for transferring.

Norethisterone Tablets

Authoritative Data Verified Data

This product contains norethisterone (C20H2602) should be labeled amount of 90.0% ~ 110.0%.

trait

This product is sugar-coated tablet or film-coated tablet, white or almost White after removing the coating.

identification

1. take an appropriate amount of fine powder of this product (about equivalent to norethisterone lOmg), add 1 ml of ethanol to dissolve, centrifuge, take the supernatant, and add 5-6 drops of silver nitrate test solution to generate white precipitate.
2. in the chromatogram recorded under the content determination item, the retention time of the main peak of the test solution should be consistent with the retention time of the main peak of the reference solution.
3. take an appropriate amount of fine powder of this product, add absolute ethanol to dissolve and dilute to make a solution containing about 10ug of norethisterone in Φlml, filter, and take the filtrate according to UV-Vis spectrophotometry (General rule 0401) the maximum absorption was measured at a wavelength of 240nm.

examination

• Content uniformity take 1 tablet of this product, put it in a 25ml(0.625mg specification) or 100ml(2.5mg specification) measuring flask, add an appropriate amount of mobile phase, sonicate to dissolve norethisterone, and dilute the mobile phase to the scale, shake well, centrifuge, take the supernatant to determine the content according to the method under the content determination item, the limit is ± 20%, should comply with the regulations (General 0941).
• dissolution this product (0.5% mg specification), according to the dissolution and release determination method (General O931 second method), with sodium dodecyl sulfate solution as dissolution medium, the rotation speed is 75 rpm, and the operation is carried out according to law. After 60 minutes (sugar-coated tablets) or 45 minutes (film-coated tablets), 20ml of the solution is taken, filtered, and the filtrate is taken as the test solution; another reference substance of norethisterone (about 12.5mg) was added into a 200ml measuring flask and dissolved by adding an appropriate amount of methanol. The solution was diluted to the standard with dissolution medium and then shaken, set in a 250ml measuring flask, dilute to the scale with dissolution medium, and shake to serve as a reference solution. The sample solution and the reference solution were measured by 20ul, and the dissolution amount of each tablet was calculated according to the method under the content determination item. The limit is 60% (sugar-coated tablets) or 80% (film-coated tablets) of the label amount and should be met.
• others shall be in accordance with the relevant provisions under the item of tablets (General rule 0101).

Content determination

• measured by high performance liquid chromatography (General 0512).
• chromatographic conditions and system suitability test using eighteen alkyl silane bonded silica gel as filler; Methanol-water (65:35) as mobile phase; The detection wavelength was 244nm. The number of theoretical plates shall not be less than 1500 based on the calculation of the block peak, and the separation degree of the block peak and its adjacent impurity peaks shall meet the requirements.
• determination of 20 tablets of this product, precision weighing, fine grinding, precision weighing an appropriate amount (equivalent to norethisterone 1.25mg), put it in a 50ml measuring flask, add an appropriate amount of mobile phase, ultrasound to dissolve norethisterone, cool, dilute to the scale with mobile phase, shake well, centrifuge, take the supernatant as the test solution; Take another reference substance, precision weighing, the mobile phase was added to dissolve and quantitatively dilute to prepare a solution containing about 25ug per 1 ml as a control solution. According to the method under the item of determination of norethisterone content, it is obtained.

 Norethisterone dropping pills

Authoritative Data Verified Data

This product containing Norethisterone should be labeled amount of 90.0% ~ 110.0%.

trait

This product is milky white to light yellow drop pills.

identification

In the chromatogram recorded under the content determination item, the retention time of the main peak of the test solution should be consistent with the retention time of the main peak of the control solution.

examination

should comply with the relevant provisions under the pill (General rule 0108).

Content determination

• measured by high performance liquid chromatography (General 0512).
• chromatographic conditions and system suitability test using eighteen alkyl silane bonded silica gel as filler; Methanol-water (60:40) as mobile phase; The detection wavelength was 240nm. The number of theoretical plates shall not be less than 2500 based on the calculation of norethisterone peak, and the separation degree between the peak of norethisterone and the peak of internal standard substance shall meet the requirements.
• preparation of internal standard solution take 25mg of hydrocortisone acetate, put it in a 100ml measuring flask, add 5M l of methanol, heat it in a hot water bath to dissolve, let it cool, and dilute it to the mark with mobile phase, shake well.
• determination Method: Take 20 pills of this product, precise weighing, fine grinding, precise weighing appropriate amount (about equivalent to 10mg of norethisterone), put it in a 50ml measuring flask, and add appropriate amount of mobile phase, dissolve norethisterone in a hot water bath with shaking, cool, dilute to scale with mobile phase, shake well, filter, Take 5ml of the continuous filtrate and 5ml of the internal standard solution in the same 25ml measuring flask, dilute to the scale with mobile phase, shake well, as a test solution, take 20ul injection liquid chromatograph, record chromatogram; Another precision weigh about 10mg of norethisterone reference, put it in 50ml measuring flask, add appropriate amount of mobile phase, ultrasonic for several minutes to dissolve, dilute to scale with mobile phase, shake well, take 5ml of the solution and 5ml of the internal standard solution, and put them in the same 25ml measuring flask, diluted with mobile phase to the scale, shake, the same method. According to the internal standard method to calculate the peak area, that is.

Product Packaging：

1) 1kg/bag (1kg net weight, 1.1kg gross weight, packed in an aluminum foil bag)

2) 25kg/drum (25kg net weight, 28kg gross weight; Packed in a cardboard-drum with two plastic-bags inside; Drum Size: 510mm high, 360mm diameter)

 Storage：

Stored in a cool and dry well-closed container. Keep away from moisture and strong light/heat.

Delivery：

Usually within3-5 working days after full payment.

transport：

EMS,DHL, TNT, UPS ,FEDEX, BY AIR, BY SEA

DHL Express, FedEx and EMS for quantity less than 50KG, usually called as DDU service; 

Sea shipping for quantity over 500KG; And air shipping is available for 50KG above;

For high value products, please select air shipping and DHL express for safe;

Our Service:
1. Fast Delivery: We can delivery within 24 hours upon receipt of your payment.
2. Quality can be promised. Hot sell to Worldwide.
3. Payment Terms: T/T,, t/t
4. Free Sample available at any time.
5. Tracking your order at any time. Inform your order's further new situation at any time.
6. Package: Professional packing with professional materials.

Packing:  
  1. Inner double plastic bags----25kg/Fiber drum (35*35*45cm, GW: 28kg, NW: 25kg); 

  2. Inner double plastic bags----5kg/Aluminum foil bag (GW: 6.5kg, NW: 5kg). 

  3. Inner double plastic bags----1kg/Aluminum foil bag (GW: 1.5kg, NW: 1kg). 

P.S.: we accept packaging customization. 

  
Delivery:   

  1. Stock products are normally shipping within 3 working days.  

  2. For rush delivery, please contact our sales team for particular arrangement. 

Shipping Details: 
  1. We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker. 

  2. Shipping details & shipping documents will be provided and sent by email. 

  3. We keep tracking the shippment until clients well received. 

  4. After years export shipping experience, with professional and experienced cooperated forwarders, we ensure that goods can be delivered in multiple ways safetly and efficiently. 

About us

Our company specializes in processing and selling chemical raw materials, chemical products, pharmaceutical intermediates, veterinary medicine intermediates, dye intermediates, pigments, cosmetics raw materials and chemical reagents,  

We have compalete sales and service team , information feedback vertical integration of a sound marketing network, products are sold throughout the country and exported to South Asia, Europe, America, Africa and other more than 20 countries and regions.  

Companies adhering to the "pursuit of quality, innovation and development" business philosophy, to serve as a foundation, for the survival by the quality, seek development by science and technology, adhere to quilty comes first,fair price,good sense of customer service and responsibility. in the future hebei Nengqian import and export trade Co.,Ltd will always hold "integrity, innovation" business philosophy, to achieve honesty management, on the way of specialization, internationalization,  Keep moving!  

FAQ: 
1. Are you a trade company or factory   
We are a  factory with our own trading company.  

2.How do you control the quality   
Our factory is equipped with professional technicians to control quality, out inspectors take sample for testing every 2 hours to ensure the quality of our production. We also accept BV, SGS or any other Third-party inspection.   

3. How long is lead time   
We deliver goods within 3 days for small order, 7-10 days for bulk order.   

4. Where is your factory located  How can I visit the factory   
 Our factory located in HEBEI, China.

5. Can i get some samples  
  Yes, we can supply free sample, but the shipping cost be paid by our customers. 

6. How to start orders or make payments  
  Proforma invoice will be sent first after confirmation of order, enclosed our bank information.Payment by T/T,  

7. How to confirm the Product Quality before placing orders  
  You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. 
  You can send us your product specifications and requests,we will manufacture the products according to your requests. 

8. How long is lead time

We deliver goods within 3 days for small order, 7-10 days for bulk order.

9. How do you treat quality complaint

  First of all, our quality control will reduce the quality problem to near zero. If there is a realquality problem caused by us, we will send you free goods for replacement or refund your loss.