Hebei yanxi chemical co., LTD is a professional research, development and production Cyromazine、Azamethiphos、lead diacetate trihydrate /Lead acetate trihydrateC、 2-phenylacetamide 、 4-Aminophenyl-1-phenethylpiperidine 、Citric acid monohydrate 、 Cit
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Min.Order:1 Metric Ton
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Type:Manufacturers
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Min.Order:1 Gram
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inquiryAppearance:White or almost white crystalline powder Storage:ln stock Package:25kg/Tin Application:Key intermediate Transportation:Express/Sea/Air Port:Shanghai
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inquiryBeluga chemical professional supply High quality 16-beta Methyl Epoxide CAS 981-34-0 1. Beluga Chemical has a professional RESEARCH and development team and strong technical force to ensure technical support and research capabilities. 2. Made in
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inquiryLorcaserin(856681-05-5)is an orally administered agent and a selective 5-HT2C receptor agonist for the treatment of obesity. It had been approved for marketing in US by FDA on 27 June in 2012. In clinical studies, lorcaserin h
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Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
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inquiryProduct name: 9-Beta,11-Beta-Epoxy-17-Alpha,21-Dihydroxy-16-Beta-Methylenepregna-1,4-Diene-3,20-Dione CAS No.:981-34-0 Molecule Formula:C22H28O5 Molecule Weight:372.45 Purity: 99.0% Package: 25kg/drum Description:White crystalline powder Manuf
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Min.Order:1 Kilogram
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Min.Order:1 Gram
Negotiable
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inquiry17α,21-dihydroxy-9β,11β-epoxy-16β-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
With D-Glucose In aq. phosphate buffer for 76h; Microbiological reaction; | 83% |
17α,21-dihydroxy-9β,11β-epoxy-16β-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
In dichloromethane; water at 25 - 30℃; for 1h; Inert atmosphere; | 75% |
With sodium hydroxide In methanol; dichloromethane at 0 - 5℃; |
17α,21-dihydroxy-9β,11β-epoxy-16β-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: phosphorus pentachloride / tetrahydrofuran / 1 h / -85 °C 2: perchloric acid; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione / water / 0.25 h / 10 - 20 °C 3: sodium hydroxide / dichloromethane; water; methanol / 3 h / -5 - 0 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 3 steps 1: phosphorus pentachloride / tetrahydrofuran / 1 h / -85 °C 2: perchloric acid; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione / water; N,N-dimethyl-formamide / 1 h / 20 °C 3: sodium hydroxide / dichloromethane; methanol / 0 - 5 °C View Scheme | |
Multi-step reaction with 4 steps 1: phosphorus pentachloride; pyridine / dichloromethane / 0.75 h / 20 °C 2: dimethyl sulfoxide / 3 h / 90 °C 3: perchloric acid; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione / water / 0.25 h / 10 - 20 °C 4: sodium hydroxide / dichloromethane; water; methanol / 3 h / -5 - 0 °C / Inert atmosphere View Scheme |
17α,21-dihydroxy-9β,11β-epoxy-16β-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: sodium acetate; acetic acid / 115 °C 2: perchloric acid; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione / water / 0.25 h / 10 - 20 °C 3: sodium hydroxide / dichloromethane; water; methanol / 3 h / -5 - 0 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 3 steps 1: sodium acetate; acetic acid / 115 °C 2: perchloric acid; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione / water; N,N-dimethyl-formamide / 1 h / 20 °C 3: sodium hydroxide / dichloromethane; methanol / 0 - 5 °C View Scheme |
17α,21-dihydroxy-9β,11β-epoxy-16β-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
With sodium hydroxide In methanol; dichloromethane; water at -5 - 0℃; for 3h; Inert atmosphere; |
17α-hydroxy-16β-methyl-21-ethoxycarbonyloxypregna-1,4,9(11)-triene-3,20-dione
17α,21-dihydroxy-9β,11β-epoxy-16β-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: perchloric acid; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione / water; N,N-dimethyl-formamide / 1 h / 20 °C 2: sodium hydroxide / dichloromethane; methanol / 0 - 5 °C View Scheme |
21-Chloro-17α-hydroxy-16β-methylpregna-1,4,9(11)-triene-3,20-dione
17α,21-dihydroxy-9β,11β-epoxy-16β-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: potassium iodide / N,N-dimethyl-formamide / 3 h / 60 °C 2: perchloric acid; 5,5-dibromohydantoin / water / 3 h / -5 °C 3: sodium sulfite; sodium hydroxide / water; methanol / 3 h / 10 °C View Scheme |
17α,21-dihydroxy-9β,11β-epoxy-16β-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
With sodium hydroxide; sodium sulfite In methanol; water at 10℃; for 3h; |
Conditions | Yield |
---|---|
With hydrogen fluoride In water; N,N-dimethyl-formamide at -15℃; | 89% |
With hydrogen fluoride |
17α,21-dihydroxy-9β,11β-epoxy-16β-methylpregna-1,4-diene-3,20-dione
9β,11β-epoxy-16β-methylandrosta-1,4-diene-3,17-dione
Conditions | Yield |
---|---|
With bithmuth(III) triflate hydrate In 1,4-dioxane at 80℃; chemoselective reaction; | 45% |
Conditions | Yield |
---|---|
With hydrogen fluoride |
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