As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch
Cas:57-91-0
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inquiry1.High quality : the purity is 99% min . through multiple producing procedures. 2.Competitive price : low price because of our skilled production technolpgy ,save the production cost at most , and give big profit room to our customers
1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s
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inquiryADVANTAGE: 1. More than 3,000 Chinese medicine reference substances / standard products available from stock, issued on the same day, multiple cities can be delivered the next day 2. The products are provided with COA, HPLC, NMR, quality assurance,
Shanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu
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inquiry
Cas:57-91-0
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Type:Manufacturers
inquiryProduct Name: Estradiol Synonyms: 1,3,5-estratriene-3,17-alpha-diol;1,3,5-Estratriene-3,17alpha-diol;17alpha-Oestradiol;3,17alpha-Dihydroxyestra-1,3,5(10)-triene;3,17-alpha-dihydroxyoestra-1,3
With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin
WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et
Cas:57-91-0
Min.Order:1 Kilogram
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Type:Trading Company
inquiryAdvantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&
Cas:57-91-0
Min.Order:0 Metric Ton
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Type:Lab/Research institutions
inquiry1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:White Crystalline Powder Storage:Store in sealed conta
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inquiry1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized
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inquiryWe are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery
Cas:57-91-0
Min.Order:10 Gram
FOB Price: $0.15
Type:Trading Company
inquiryOur company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At prese
Cas:57-91-0
Min.Order:1 Kilogram
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Type:Trading Company
inquiryOur advantages: Advantage 1, we have overseas warehouse in the local country Products can be shipped to you from overseas warehouse. 3-4 days safe delivery. Or you can go to the warehouse and pick it up. (This can be selected according to the produc
Cas:57-91-0
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Type:Trading Company
inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
Cas:57-91-0
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inquiryHenan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
Our company provides one-stop services of research - development - production for a variety of special prouducts. Not only do we make effective use of our strong technological strength, but also establish of cooperative relations with several well-
Cas:57-91-0
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inquiryHangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia
Our Services 1. We are a professional exporter for Optical Brighteners, dyes, pigments 2. Stable and continue quality 3. Quickly delivery 4. Good service Our advantages 1. Government awarded company. Top 100 enterprises in Hangzhou 2. Qua
A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
57-91-0 Estradiol Appearance:white powder Storage:room temperature Package:according to customers' requirements Application:Pharma intermediates Transportation:By air(EMS or EUB or FedEx or TNT ect...) or by sea(FOB or CIF or CNF ect...)or accordin
Superior quality, moderate price & quick delivery. Appearance:White solid Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Estradiol (known
Established in May 2015, TaiChem Ltd. is initially invested by a British research and development company and started by PhDs back from aboard. The company is registered in China Medical City (CMC), Taizhou, Jiangsu Province, and the production site
Lyander’s R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. Lyander can provide different quantities of cu
Our Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an
GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
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inquirySAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in
estradiol-3,17α-diacetate
A
α-estradiol
B
17α-acetoxy-estra-1,3,5(10)-trien-3-ol
Conditions | Yield |
---|---|
With lipase from Candida cylindracea; octanol In various solvent(s) at 37℃; for 144h; | A 60% B 25% |
Conditions | Yield |
---|---|
With propan-1-ol; sodium |
Conditions | Yield |
---|---|
With sodium |
Conditions | Yield |
---|---|
With ethanol; nickel at 120℃; under 14710.2 Torr; Hydrogenation; | |
With potassium hydroxide; aluminum nickel at 80 - 90℃; | |
With aluminum isopropoxide; isopropyl alcohol |
Conditions | Yield |
---|---|
Isolierung aus dem Harn von weiblichen Kaninchen nach Injektion von (+)-Oestron; | |
Multi-step reaction with 2 steps 1: p-toluenesulfonic acid / methanol 2: NaBH4 / propan-2-ol; H2O / 16 h / Ambient temperature View Scheme |
Estrone
aluminum isopropoxide
isopropyl alcohol
A
estradiol
B
α-estradiol
estrone 3-benzoate
aluminum isopropoxide
isopropyl alcohol
A
estradiol
B
α-estradiol
estradiol
A
Estrone
B
estrone sulfate
C
α-estradiol
D
estradiol-3-sulfate
E
17-alpha-estradiol-3-sulfate
F
estradiol-17ξ 17-sulfate
Conditions | Yield |
---|---|
Product distribution; Mechanism; metabolism after i. v. injection in White Leghorn laying hens, <3H>labelled; |
Conditions | Yield |
---|---|
With sodium tetrahydroborate In water; isopropyl alcohol for 16h; Ambient temperature; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
Conditions | Yield |
---|---|
at 80 - 90℃; |
α-estradiol
Conditions | Yield |
---|---|
With potassium acetate; N,N-dimethyl-formamide anschliessendes Behandeln mit methanol. KOH; |
α-estradiol
Conditions | Yield |
---|---|
With lithium aluminium tetrahydride |
α-estradiol
Conditions | Yield |
---|---|
With potassium acetate; N,N-dimethyl-formamide anschliessendes Behandeln mit methanol. KOH; |
ethanol
17α-dihydroequilenin
A
α-estradiol
B
estratriene-(B)-diol-(3α.17α)
C
estratriene-(B)-diol-(3β.17α)
pentan-1-ol
17α-dihydroequilenin
A
α-estradiol
B
estratriene-(B)-diol-(3α.17α)
C
estratriene-(B)-diol-(3β.17α)
Conditions | Yield |
---|---|
With diisobutylaluminium hydride In toluene |
Conditions | Yield |
---|---|
With tris(2-carboxyethyl)phosphine In water; acetonitrile pH=7.4; aq. phosphate buffer; Inert atmosphere; |
α-estradiol
Conditions | Yield |
---|---|
With sodium hydroxide In ethanol; water for 0.5h; Reflux; | 378.4 g |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: potassium carbonate; tetra(n-butyl)ammonium hydrogensulfate / dichloromethane; water 1.2: 2 h / 22 °C 2.1: di-isopropyl azodicarboxylate; triphenylphosphine / toluene / 1 h / 25 - 100 °C 3.1: sodium hydroxide / ethanol; water / 0.5 h / Reflux View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: 2-(diphenylphosphino)pyridine / toluene / 10 h / Cooling with ice 1.2: 20 h / 80 °C 2.1: copper(ll) bromide; lithium bromide / ethyl acetate / 4.5 h / 90 °C 3.1: potassium hydroxide / water; ethanol / 16 h / 95 °C View Scheme |
α-estradiol
Conditions | Yield |
---|---|
With potassium hydroxide In ethanol; water at 95℃; for 16h; |
5-(dimethylamino)naphth-1-ylsulfonyl chloride
α-estradiol
DNS-α-estradiol
Conditions | Yield |
---|---|
Duolite A-102D In acetone for 0.0833333h; | 93% |
Conditions | Yield |
---|---|
Stage #1: α-estradiol; sodium hydride In tetrahydrofuran at 22℃; for 1h; Stage #2: With triethylamine sulfur trioxide In tetrahydrofuran at 22℃; Product distribution / selectivity; | 90% |
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride; potassium carbonate In acetonitrile for 48h; Reflux; | 89% |
Conditions | Yield |
---|---|
In dichloromethane at -78℃; for 1h; | 86% |
Conditions | Yield |
---|---|
Stage #1: α-estradiol; sodium methylate In tetrahydrofuran; methanol at 22℃; for 0.5h; Stage #2: With sulfur trioxide trimethylamine complex In tetrahydrofuran; methanol at 22℃; for 20h; Product distribution / selectivity; | 86% |
Conditions | Yield |
---|---|
With tetrabutylammomium bromide; water; potassium carbonate In N,N-dimethyl-formamide at 60℃; for 8h; Substitution; | 85% |
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 72h; Inert atmosphere; | 85% |
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride; potassium carbonate In acetonitrile for 72h; Reflux; | 80% |
α-estradiol
Conditions | Yield |
---|---|
With hydrogenchloride; potassium tert-butylate In N,N-dimethyl-formamide stirring Fe-complex, steroid and t-BuOK, addn. of excess 10% HCl and then NH4PF6; | 77% |
With hydrogenchloride; potassium carbonate In N,N-dimethyl-formamide stirring Fe-complex, steroid and K2CO3 at 55°C for 4-6 h, coolingto room temp., addn. of excess 10% HCl and then NH4PF6; partial evapn. (reduced pressure), extn. into CH2Cl2 (or CH2Cl2/MeNO2=1:1), drying (Na2SO4), evapn., chromy. (Al2O3, CCl4 or CHCl3; then CH2Cl2/CHCl3), evapn., drying (vac. desiccator); elem. anal.; | 77% |
With hydrogenchloride; potassium carbonate In tetrahydrofuran; dimethyl sulfoxide stirring Fe-complex, steroid and K2CO3 in THF/DMSO=9:1 at 55°C for 4-6 h, cooling to room temp., addn. of excess 10% HCl and then NH4PF6; partial evapn. (reduced pressure), extn. into CH2Cl2 (or CH2Cl2/MeNO2=1:1), drying (Na2SO4), evapn., chromy. (Al2O3, CCl4 or CHCl3; then CH2Cl2/CHCl3), evapn., drying (vac. desiccator); |
α-estradiol
Conditions | Yield |
---|---|
With Amberlyst A26-resin bound iodine azide In acetonitrile at 20℃; for 2h; Catalytic behavior; Inert atmosphere; | 76% |
Conditions | Yield |
---|---|
With potassium hydroxide In methanol; water at 65℃; for 0.5h; | 75% |
With sodium hydroxide |
α-estradiol
Conditions | Yield |
---|---|
With sulfuric acid for 0.333333h; Ambient temperature; | 72% |
formaldehyd
α-estradiol
A
(8R,9S,13S,14S,17R)-3,17-dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-4-carbaldehyde
Conditions | Yield |
---|---|
Stage #1: formaldehyd; α-estradiol With triethylamine; magnesium chloride In tetrahydrofuran Inert atmosphere; Reflux; Stage #2: With lithium hydroxide In methanol for 0.25h; Stage #3: With hydrogenchloride In methanol; water | A n/a B 69% |
Conditions | Yield |
---|---|
In water; acetone for 24h; pH=7; Time; Microbiological reaction; regioselective reaction; | 69% |
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In dichloromethane at 20℃; for 3h; Inert atmosphere; | 39.6% |
Conditions | Yield |
---|---|
With sulphamoyl chloride In acetonitrile for 10h; | A 14.6% B 35.4% |
Conditions | Yield |
---|---|
With sodium hydroxide | |
Alkaline conditions; |
Conditions | Yield |
---|---|
With pyridine; dichloromethane |
Conditions | Yield |
---|---|
With sodium hydroxide; tetra(n-butyl)ammonium hydrogensulfate In chloroform |
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