Equipped with the best GMP factory of best quality estriol for cosmetic, health care and human nutritional products in China, it is able to supply you with top quality estriol USP/EP 99%, as well as the reactive intermediate of natural food supplements products.Product Description ?The ovary produces a form named estradiol, which is converted into another important estrogen called estrone. Estriol is yet another form of estrogen metabolized from estradiol, weaker than the other two, but still active. Although estriol is most commonly linked to pregnancy since it is produced in the most measurable amounts at that time, it is still present throughout a woman's lifetime at varying levels and fluctuate throughout the day.CAS??NO.:?50-27-1Molecular?Formula:C18H24O3Molecular?Weight:?288.38Einecs: 200-022-2Melting Point: 281-282??????Specification:?USP34ItemSpec.CharacteristicsWhite or almost white crystalline powderIdentificationA:TLC?B:UV spectrumC:IR spectrumSpecific optical rotation?60 °~?65°SolubilityPractically?soluble?in?watersparingly soluble?in ethanol(96 per cent)Melting pointabout 282?Loss on drying=0.5%Related substances?Impurity A = 0.5%?Impurities B,C,D,E,F,G ?=0.5%Sum of impurities other than A=1.0%Disregard limit= 0.05%Non specific impurities= 0.05%Residual solventsMethanolAcetone?=3000ppm=5000ppmAssay97.0 ~ 103.0%ConclusionConform to USP34??Application?Used in the treatment of leucopenia disease, also have certain curative effect to an enlarged prostate, prostate?Packing &DeliveryPackaging?Detail:1kg/Alu-bag; 25kg/DrumDelivery Detail:ImmediatelyFiles available: DMF open file, Stability Data Sheet, MSDS, Particle Size Distribution MOA, LAL testing, Particle Size testing.?Storage and Shelf LifeStore in cool & dry place, Keep away from strong light and heat, 24 months when properly stored??Company InformationWellgreen Technology Co.,Ltd is a high - tech corporation and iso9001: quality management system certification specializing in the production of nutritional supplements, herbal essence, steroids and its intermediates pharmaceutical industry. Wellgreen has developed into the leading companies in this field, there are two factories. ??Certifications?FAQQ1:?Can?i?get?some?samples?A:?Yes,?we?can?supply?the?free?sample,?but?the?shipping?cost?be?paid?by?our?customers.Q2:?How?to?start?orders?or?make?payments?A:?Proforma?invoice?will?be?sent?first?after?confirmation?of?order,?enclosed?our?bank?information.?Payment?by?T/T,?Western?Union?or?Paypal?or?Escrow(Alibaba).Q3:?How?to?confirm?the?Product?Quality?before?placing?orders?A: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.Q4:What’s?your?MOQ?A:Our?MOQ?is?1kg.?But?usually?we?accept?less?quantity?such?as?100g?on?the?condition?that?sample?charge?is?100%?paid.Q5:?How?about?delivery?leadtime?A:Delivery?lead?time:?About?3-5?days?after?payment?confirmed.?(Chinese?holiday?not?included)Q6:Is?there?a?discount?A:Different?quantity?has?different?discount.Q7:?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.Q8:?How?to?contact?us??A:You?can?chat?with?us?by?Trademanager,MSN&Skype?Online.?You?can?choose?your?interested?products?and?send?inquiry?to?us.?You?can?dial?our?telephone?directly,?you?will?get?our?reply.?Send?Email?to?us.
link:http://www.wellgreenxa.com/progestin/estriol.html