Good Quality & Low Price CAS No 57-63-6 Ethynyl Estradiol

Product Description:

99% Ethynyl estradiol CAS 57-63-6 Ethynyl estradiol:

The phosphate salt form of ruxolitinib, an orally bioavailable Janus-associated kinase (JAK) inhibitor with potential antineoplastic and immunomodulating activities. Ruxolitinib specifically binds to and inhibits protein tyrosine kinases JAK 1 and 2, which may lead to a reduction in inflammation and an inhibition of cellular proliferation. The JAK-STAT (signal transducer and activator of transcription) pathway plays a key role in the signaling of many cytokines and growth factors and is involved in cellular proliferation, growth, hematopoiesis, and the immune response; JAK kinases may be upregulated in inflammatory diseases, myeloproliferative disorders, and various malignancies.

Main functions of Ethynyl estradiol CAS 57-63-6 :

Estrogens direct the development of the female genotype in embryogenesis and at puberty. Estradiol is the major estrogen secreted by the premenopausal ovary. Ethynyl estradiol is a synthetic analog of 17β-estradiol. Efficacy of oral administration of ethynyl estradiol is facilitated by the ethynyl substitution at the C-17 position, which inhibits first pass hepatic metabolism. Ethynyl estradiol is also rapidly and almost completely absorbed from the gastrointestinal tract. 

Hebei  Lvyang Biotechnology Co.,Ltd.
 is a specialized production enterprise integrating scientific research, production, processing and export.mainly deal in pharmaceutical intermediates,various industrial chemicals and Food Additives.Our products are widely used in Food & Beverage industry, Chemical industry, and Pharmacy industry,etc. 
our products have spread over more than 30 countries in the world, the U.S.A, Poland, Canada, Italy, India,Brazil, Saudi Arabia, Israel, South Africa, Kenya, Latvia, U.K., Germany, Czech, Switzerland, Norway, Ethiopia, Chile, New Zealand, Australia, Columbia and so on.
We has established and improved the strict quality standard inspection system. In addition to the ISO9001 certification system, the company also commissioned SGS testing and testing institutions to test the quality of our products with national standards as the benchmark, we do our best to satisfy our customers with our quality.
 We are a professional and experienced team and we promise clients to provide the best quality, price and service. Besides, in the business cooperation with clients, we still abide by principle of equality and mutual benefit, deeply trusted and recognized by clients. 


Why choose us

1 Best service, high quality and reasonable price

2. It's customers' right to choose the package (EMS, DHL, FedEx, UPS);

3.It's customers' right to choose the packing way for his products from many recent effective packing ways.

4.Specials are possible when client's order is big enough, including the discount policy;

5.Our company promise to deliver clients' package to his hands safely, or we'll cover the total loss and reship in time;

6. Return policy: we promise we will return your money if our product don't have effect.

FAQ
1.Q: Can i get some samples?
A:Yes, we can supply the free sample ,but the shipping cost be paid by customer.
2.Q:How to start orders or make payment?
A:WesternUnion,bitcoin ,etc.
3.Q:How to confirm the Product Quality before placing orders?
A:We have complete QS system,and will provide the test report.You can get free samples for some products,you only need to pay the shipping cost.
4.Q:What's your MOQ?
A: Depending on the cost of product,it will be 5g if cost is high.
5.Q:How about delivery leadtime?
A:Within 2 working days after payment confirmed.
6.Q:How do you control the safety of your products ?
A:Control raw material to finished product, third party report
7.Q:Is it field inspection available ?
A:Yes,we support field inspection.
8.Q:How long does it take to the goods arrived?
A:For 1KG-100KG, Within 5-7 days by DHL,UPS,TNT, FEDEX,EMS Over 100KG.within 5-8days by air,20-40days by sea.
9.Q:How about Customs clearance?Will you refund or reship if it is seized?
A: We have full of experience to do the customs clearance,generally it will have no trouble.And we will reship or refund for you if it is seized by our mistake.