Quick Details:

Estriol
Synonyms: 50-27-1, steroid powder, Estriol
CAS No.: 50-27-1
Formula: C18H24O3
Molecular Weight: 288.39
EINECS: 200-022-2
Density: 1.255 g/cm3
Melting Point: 280-282 ° C(lit. )
Boiling Point: 469 ° C at 760 mmHg
Flash Point: 220.8 ° C
Purity: 99%
Appearance: White crystalline powder
PackAge: 1kg/foilbag
Min. order quantity: 10g
Payment: Western Union, Moneygram
Shipment: EMS, DHL, FedEx, TNT
Delivery: safe & timely, around 7days after payment.

Function & Usage:

Estradiol, or more precisely, 17β-estradiol, is a human sex hormone and steroid, and the primary female sex hormone. It is named for and is important in the regulation of the estrous and menstrual female reproductive cycles. Estradiol is essential for the development and maintenance of female reproductive tissues but it also has important effects in many other tissues including bone. While estrogen levels in men are lower compared to women, estrogens have essential functions in men as well. Estradiol is found in most vertebrates as well as many crustaceans, insects, fish, and other animal species.
Estradiol or oestradiol (American or British English usages), derives from estra-, Gk. οστρο? (oistros, literally meaning "verve or inspiration") and -diol, a chemical name and suffix indicating that this form of steroid and sex hormone is a type of alcohol bearing two hydroxyl groups.
Estradiol is produced especially within the follicles of female ovaries, but also in other endocrine (i.e., hormone-producing) and non-endocrine tissues (e.g., including fat, liver, adrenal, breast, and neural tissues). Estradiol is biosynthesized from progesterone (arrived at in two steps from cholesterol, via intermediate pregnenolone). One principle pathway then converts progesterone to its 17-hydroxy-derivative, and then to androstenedione via sequential cytochrome P450-catalyzed oxidations.Action of aromatase on this dione generates estrone, and action of a dehydrogenase on this gives the title compound, 17β-estradiol.

How to make an order :

1. Name what your need ( which product , quantity )
2. Full payment would be done once we come to an agreement on all details .
3. Parcel would be shipped out upon receipt of payment .
4. Info about parcel would be offered ( Photo , tracking number )
5. Finally you would get the parcel in 3~7 days .

Payment and Shipping:




Our service:

1.We have experience in exporting Pharmaceutical intermediates .
2.Professional packing with professional materials
3. We have products in stock, and we will deliver them soon when your PO arrived. Meanwhile we will give you the tracking number in order to make you know the exact location of the products. We will keep track of the product until they arrive you; We choose the best courier service for you, and with the delivery around 5-7 working days.
If any new enquiry,please feel free to contact us!

Our Advantages:

1,High quality under strict QC/QA system with GMP factory price
2,Fast and safe delivery with secure and discreet shipment
3,Providing complete services with our resource integration, we can thus create more competitive
advantages for you!

FAQ:

Q1: Have your Product Quality been Approved by Third Party Lab?

A: Yes, All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China. So you will be assured with Good Quality if you choose us. 
 
Q2: How do you treat quality complaint?

A: First of all, our QC department will do strict examination of our export products by HPLC, UV, GC,TLC and so on in order to reduce the quality problem to near zero. If there is a real quality problem ,caused by us, we will send you free goods for replacement or refund your loss.
 
Q3: How to cooperate with us?

You can contact us for cooperation through the website contact information, or contact with the salesmen in our company. We will connect you about the specific detail via email. 

Q4: Do you Accept Sample Order?

A: Yes, we accept small order from 10g, 100g and 1kg for your evaluation quality of our goods.

Q5: Is there any discount?

A: Yes, for larger quantity, we always support with better price. 

Q6: Do you accept VISA business credit card ?

A: Sorry we don't accept VISA credit card,
we'd like to accept T/T , Moneygram ,Western Union.

Q7: How long does it take to the goods arrived ?

A:It is Depending on your location,
For small order, please expect 5-7 days by DHL,UPS,TNT, FEDEX, EMS.
For mass order, please allow 5-8 days by Air, 20-35 days by Sea.

Q8: Do you have any reshipment policy ?  

We have good after-sale service and re-shipment policy if the parcel  lose.
Our long association with  our clients has brought great benefits.
We always take the upmost care in the packaging of our products .
Our clients will confirm this as even they struggle to find them without help at times.
But in spite of our best efforts it is still possible  will seize a small number of packages.
In this circumstance we promise reship free  to establish  long term relationship.