Product Name: Estriol
Type: Natural hormone, Estrogen and progestin drugs,
CAS: 50-27-1
MF: C18H24O3
MW: 288.38
EINECS: 200-022-2
Properties: white crystalline powder, odorless
Melting point: 281.5ºC
Content: 99%min
Package: 10g/100g/500g//1000g/foil bag.
 

Flash Point	220.8±23.3 °C
Exact Mass	288.172546
PSA	60.69000
LogP	2.94
Vapour Pressure	0.0±1.2 mmHg at 25°C
Index of Refraction	1.624
Storage condition	-20°C Freezer

Estriol

Estriol (E3), also spelled oestriol, is a steroid, a weak estrogen, and a minor female sex hormone. It is one of three major endogenous estrogens, the others being estradiol and estrone. Levels of estriol in women who are not pregnant are almost undetectable. During PREGNANCY, a large amount of estriol is produced by the PLACENTA. Isomers with inversion of the hydroxyl group or groups are called epiestriol.

Usage

1) used for treating cervicitis, especially suitable for treating menopausal syndrome and senile vaginitis.
2) used as the adjuvant drug for middle-term labor induction and artificial abortion.
3) used for treating prostatic hypertrophy and prostate cancer.
4) In addition, it still has a rapid role in increasing the peripheral leukocytes.
5) It has efficacy in treating leukopenia caused by chemotherapy or radiotherapy as well as reducing the vascular permeability and fragility and can be used for the treatment of various kinds of hemorrhage.
6) It also has quick hemostasis effect on menorrhagia, hysterectomy or tonsillectomy.

 

Specification

Items	Specification	Results
Appearance	White to practically white, odorless, crystalline powder.	white crystalline powder, odorless
Identification	A:IR B:UV	Conforms
Melting point	About280ºC	281.5ºC
Solubility	Insoluble in water; sparingly soluble in alcohol; soluble in acetoe, n ether, and in vegetable oils	Conforms
Completeness of solution	The solution is clear and free from undissolved solid.	Conforms
Loss on drying	≤0.5%	0.26%
Specific optical rotation	+54°~ +62°	+57.07°
Total impurities	≤2.0%	Conforms
Residue on ignition	≤0.1%	0.06%
Assay	≥99%	99.63%
Conclusion	Qualified

 

 

Estrogen Series
 

Estrogen Series
Product	Cas
Estradiol	50-28-2
Oxytocin	50-56-6
Progesterone	57-83-0
Ethynyl estradiol	57-63-6
Estriol	50-27-1
Diethylstilbestrol	6898-97-1
carbetocin	37025-55-1
Estradiol cypionate	313-06-4
Estradiol benzoate	50-50-0
Estradiol Enanthate	4956-37-0
Estradiol valerate	979-32-8
Medroxyprogesterone Acetate	71-58-9
Dydrogesterone	152-62-5
17a-Hydroxyprogesterone caproate	630-56-8
Megestrol acetate	595-33-5
Cyproterone acetate	427-51-0
Hydroxyprogesterone	68-96-2
Levonorgestrel	797-63-7
Pregnenolone	145-13-1
Estrone	53-16-7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. All inquiry should be replied within 12 hours. 

2. Faster delivery would be arranged within 24hours after payment from our clients.

3. Sample is available for your evaluation & Formulation development. 

4. Quality is life of our buisness and long-termed business makes us place much emphasis on our products quality. And we must check the quality of every batch of products beforte sending out to clients . 

5.After-Sale Service:
1) International Authorized Third-Party Test For The Products You Demand.
2) 30 Days Warranty of quality of goods.

6. We need to be familiar with your Country Customs, which can decrease your trouble, let's take some examples:

Δ Poland: When you send a parcel with total weight over 2kg they are going with different service and are checked more thorough .

ΔΔ Switzerland:  If package were worth more than 20 euros and then our friends have to pay customs , moreover it means the Customs Staff opens the package, so we need to avoid more than 20 euros declared value  .

ΔΔΔ Norway: It is illegal to import any product to Norway that contains meat or milk, and we need to set the value on the order to under 35 dollars. Otherwise our friends in Norway have to pay 20% tax.

ΔΔΔΔ Colombia: We need the packages to weigh under 2kg because if it weighs more than 2kg my friend has to go to the post office to pick it up

ΔΔΔΔΔ Australia: There are two Main Customs in Australia: Customs of MELBOURNE VIC and Customs of SYDNEY NSW. As we know the latter one is very easy to pass. Different Courier Choice can make parcels go through different Customs.  We will help you choose the shipping Courier which can make sure your parcel go through easy Customs of SYDNEY NSW, and make sure success rate 100%.

ΔΔΔΔΔΔ Spain: Taxes when is here,if the order exceed 20€ the customs apply taxes in spain, so decleard valuse should be controlled under 20€  .


7. We have strong cooperation with DHL, TNT, UPS, FEDEX, EMS and so on, different country needs to choose their suitable shipping company for the 100% successful delivery .

Q1: Will you supply samples for testing
A: Samples are available for most products.
 
      Q2: What's your MOQ
A: For the high value product, our MOQ starts from 10g or 100g ; For the low value product starts from 1kg.
 
            Q3: Which kind of payment terms do you accept
A:  T/T, Western Union , Money Gram and Paypal
 
                   Q4: How about your delivery time
A: →You can receive parcel photo from us within 6 hours after receiving your payment;
    →You can receive your tracking number within 24 hours after receiving your payment;
    →You can receive your parcel in 8 to 16 days .

                             Q5: How do you treat quality complaint 
A:First of all, our quality control will 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.
 
                                     Q6: I buy a lot of products from China, but I every time I spend much money, time and energy in finding and buying the goods, sometimes poor goods, could you help me handle this if I can be your customer?
    we can help clients to buy solvents such as EO, BB, BA, GSO, Guaiacol when you are going to buy them ;
    we can help  clients to buy 5ml or 10ml vials  including rubber stopper, flip off cap in China at factory cost;
    we can help  clients to buy 13mm or 20mm stainless Vial crimper /Capping tool in China at factory cost;
    we can help clients to buy mechanical filter including pump, vacuum filter holder and membrane of 50mm,0.22um;
    we can help clients to buy single-punch tablet press Machine  in China at factory cost;