Items Standard Result Assay (Ursolic acid) 98%min 98.22% -----------------------------------------------------------------------------------------------------------
Cas:24916-90-3
Min.Order:1 Gram
FOB Price: $100.0 / 500.0
Type:Trading Company
inquiryhebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm
Cas:24916-90-3
Min.Order:1 Metric Ton
FOB Price: $1.0 / 3.0
Type:Manufacturers
inquiry1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; ...... Appearance:Off-white or light yellow powder Storage:Refrigerator Package
Cas:24916-90-3
Min.Order:1 Metric Ton
FOB Price: $1000.0
Type:Trading Company
inquiryThe above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
Cas:24916-90-3
Min.Order:1
Negotiable
Type:Other
inquiryOur main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block
Cas:24916-90-3
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryOur advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva
Cas:24916-90-3
Min.Order:1 Kilogram
FOB Price: $9.0 / 99.0
Type:Trading Company
inquiryOur company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O
Cas:24916-90-3
Min.Order:1 Gram
FOB Price: $1.0
Type:Lab/Research institutions
inquiryWITH 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:24916-90-3
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryOur Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We
Advantage : 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:24916-90-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
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
Cas:24916-90-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryWuhan hanweishi Pharmchem Co., Ltd(Hanways chempharm) is a specialized company concentrating on the R&D, production, marketing and technical service of APIs and pharmaceutical intermediates. The leading products range are APIs, Hormones, Peptides
Cas:24916-90-3
Min.Order:100 Kilogram
FOB Price: $1.0 / 5.0
Type:Trading Company
inquiryDexamethasone 9,11-epoxide CAS:24916-90-3 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organi
Cas:24916-90-3
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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:24916-90-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryProduct Detail Minimum Order Qty. 10 Gram Supply Ability 500 Kilograms/Month Storage store in cool, dry, ventilated place 20℃ Delivery Time 3 business days after payment Payment Term TT,western union,Paypal,
Cas:24916-90-3
Min.Order:20 Metric Ton
Negotiable
Type:Trading Company
inquiry1.high quality: quality is life. quality is the most important element for all goods. we have a lab doing research in wuhan china. hplc and nmr is available if needed. 2.reasonable price: we provide high quality products wi
Cas:24916-90-3
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
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
Specification:USP/EP Month production ablity:50kg/Month Low price& High quality Manufacturer Name (9b,11b,16a)-9,11-Epoxy-17,21-dihydroxy-16-methyl-pregna-1,4-diene-3,20-dione Sy
Strict quality control: good raw materials, good quality, Zenuo Biology has always regarded quality as the life of the enterprise. Zenuo Biology has an independent quality control department and long-term cooperation with the third-party detection
Cas:24916-90-3
Min.Order:100 Gram
Negotiable
Type:Lab/Research institutions
inquiryA 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
Cas:24916-90-3
Min.Order:4 Kilogram
Negotiable
Type:Lab/Research institutions
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
Cas:24916-90-3
Min.Order:0 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
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
Cas:24916-90-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryOur Advantages Production: Advanced chemical equipment with years of experience.Staffs for producing various extract products. Quality Control:A complete set of Testing Professional and Analysis Equipment ensures the Quality Requirements and Speci
Cas:24916-90-3
Min.Order:1 Kilogram
FOB Price: $150.0 / 180.0
Type:Trading Company
inquiryWhy Choose Us: 1. Factory direct sales, so we can provide the competitive price and high quality product base on 8 years of production and R&D experience. 2. It is available in stock for quick shipment.Products could be packaged according to cu
Cas:24916-90-3
Min.Order:1 Gram
Negotiable
Type:Other
inquiryZibo 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
Cas:24916-90-3
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquirySuperior quality, moderate price & quick delivery. Appearance:Pale-Yellow Solid Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:as per your request Application:Dexamethasone intermediate. Transportation:as
Cas:24916-90-3
Min.Order:1 Metric Ton
Negotiable
Type:Trading Company
inquiryEstablished 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
Cas:24916-90-3
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
inquiryProduct name: 9b,11b-Epoxy-17,21-Dihydroxy-16a-Methylpregna-1,4-Diene-3,20-Dione CAS No.:24916-90-3 Molecule Formula:C22H28O5 Molecule Weight:372.45 Purity: 99.0% Package: 25kg/drum Description:White crystalline powder Manufacture Standards:En
Cas:24916-90-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryProduct Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
Cas:24916-90-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
With sodium hydroxide In methanol; dichloromethane at 0 - 5℃; | 93.3% |
17α,21-dihydroxy-9β,11β-epoxy-16α-methylpregna-1,4-diene-3,20-dione 21-acetate
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
With sodium hydroxide In methanol at -10 - -5℃; for 2h; Reagent/catalyst; Temperature; | 84% |
With water; sodium hydroxide In methanol; dichloromethane at -5 - 0℃; for 3h; |
11α,17,21-trihydroxy-16α-methyl-pregna-1,4-diene-3,20-dione
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: triethylamine / dichloromethane / -15 °C 2: phosphorus pentachloride / tetrahydrofuran / -85 °C 3: perchloric acid; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione / water; N,N-dimethyl-formamide / 1 h / 20 °C 4: sodium hydroxide / dichloromethane; methanol / 0 - 5 °C View Scheme |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: phosphorus pentachloride / tetrahydrofuran / -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 |
17α-hydroxy-16α-methyl-21-ethoxycarbonyloxypregna-1,4,9(11)-triene-3,20-dione
17α,21-dihydroxy-9β,11β-oxido-16α-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 |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
9,11-epoxy-17α-hydroxy-16α-methyl-3-oxandrosta-1,4-diene-17β-carboxylic acid
Conditions | Yield |
---|---|
With periodic acid In tetrahydrofuran; water at 0 - 5℃; for 2h; | 98.7% |
acetic anhydride
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
17α,21-dihydroxy-9β,11β-epoxy-16α-methylpregna-1,4-diene-3,20-dione 21-acetate
Conditions | Yield |
---|---|
With potassium acetate In ISOPROPYLAMIDE at 20℃; for 2h; | 98% |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
21-chloro-17α-hydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
With Vilsmeier reagent In tetrahydrofuran Reagent/catalyst; Solvent; Inert atmosphere; | 86% |
Multi-step reaction with 2 steps 1: triethylamine; 4-(dimethylamino)pyridine / CH2Cl2 / 0 - 5 °C 2: CH2Cl2; methanol / 3.5 h / 40 - 42 °C View Scheme |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
methanesulfonyl chloride
17α,21-dihydroxy-9β,11β-epoxy-16α-methylpregna-1,4-diene-3,20-dione 21-methanesulfonate
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran for 4h; Ambient temperature; | 84% |
With pyridine at -5 - 0℃; for 5h; |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
A
21-chloro-17α-hydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
B
9β,11β-epoxy-17α-hydroxy-17β-(4-(R)-hydroxy-2,2-dioxido-1,2-oxathiolan-4-yl)-16α-methylandrosta-1,4-diene-3-one
Conditions | Yield |
---|---|
With dmap; methanesulfonyl chloride In dichloromethane for 4h; Heating; | A 69% B 1.1% |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
methanesulfonyl chloride
A
21-chloro-17α-hydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
B
9β,11β-epoxy-17α-hydroxy-17β-(4-(R)-hydroxy-2,2-dioxido-1,2-oxathiolan-4-yl)-16α-methylandrosta-1,4-diene-3-one
Conditions | Yield |
---|---|
With dmap In dichloromethane for 4h; Heating; | A 69% B 1.1% |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
C22H28O6
Conditions | Yield |
---|---|
With selenium(IV) oxide In 1,4-dioxane at 80℃; for 1h; | 33.5% |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
p-toluenesulfonyl chloride
Conditions | Yield |
---|---|
With dmap; triethylamine In dichloromethane at 0 - 5℃; | |
With triethylamine hydrochloride In dichloromethane at -5 - 5℃; for 9h; |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
mometasone
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 69 percent / 4-DMAP, CH3SO2Cl / CH2Cl2 / 4 h / Heating 2: 83 percent / conc. HCl / acetic acid / 3 h / Ambient temperature View Scheme | |
Multi-step reaction with 2 steps 1: 69 percent / 4-DMAP / CH2Cl2 / 4 h / Heating 2: 83 percent / conc. HCl / acetic acid / 3 h / Ambient temperature View Scheme |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Mometasone furoate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 69 percent / 4-DMAP, CH3SO2Cl / CH2Cl2 / 4 h / Heating 2: 3.44 g / Et3N, 4-DMAP / CH2Cl2 / 6 h / Ambient temperature 3: 83 percent / conc. HCl / acetic acid / 3 h / Ambient temperature View Scheme | |
Multi-step reaction with 3 steps 1: 69 percent / 4-DMAP / CH2Cl2 / 4 h / Heating 2: 3.44 g / Et3N, 4-DMAP / CH2Cl2 / 6 h / Ambient temperature 3: 83 percent / conc. HCl / acetic acid / 3 h / Ambient temperature View Scheme |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
9,11-Epoxidemometasone furoate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 69 percent / 4-DMAP, CH3SO2Cl / CH2Cl2 / 4 h / Heating 2: 3.44 g / Et3N, 4-DMAP / CH2Cl2 / 6 h / Ambient temperature View Scheme | |
Multi-step reaction with 2 steps 1: 69 percent / 4-DMAP / CH2Cl2 / 4 h / Heating 2: 3.44 g / Et3N, 4-DMAP / CH2Cl2 / 6 h / Ambient temperature View Scheme |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 84 percent / Et3N / tetrahydrofuran / 4 h / Ambient temperature 2: 80 percent / DBU / CH2Cl2 / 2 h / Heating View Scheme |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
17β-(2,2-dioxido-3,4-dehydro-1,2-oxathiolan-4-yl)-9β,11β-epoxy-17α-hydroxy-16α-methylandrosta-1,4-dien-3-one 17-(2-furoate)
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1.1 percent / 4-DMAP, CH3SO2Cl / CH2Cl2 / 4 h / Heating 2: 10 mg / 4-DMAP, Et3N / CH2Cl2 / 5 h / Ambient temperature View Scheme | |
Multi-step reaction with 2 steps 1: 1.1 percent / 4-DMAP / CH2Cl2 / 4 h / Heating 2: 10 mg / 4-DMAP, Et3N / CH2Cl2 / 5 h / Ambient temperature View Scheme |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 1.1 percent / 4-DMAP, CH3SO2Cl / CH2Cl2 / 4 h / Heating 2: 10 mg / 4-DMAP, Et3N / CH2Cl2 / 5 h / Ambient temperature 3: 87 percent / conc. HCl / acetic acid / 2 h / Ambient temperature View Scheme | |
Multi-step reaction with 3 steps 1: 1.1 percent / 4-DMAP / CH2Cl2 / 4 h / Heating 2: 10 mg / 4-DMAP, Et3N / CH2Cl2 / 5 h / Ambient temperature 3: 87 percent / conc. HCl / acetic acid / 2 h / Ambient temperature View Scheme |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 84 percent / Et3N / tetrahydrofuran / 4 h / Ambient temperature 2: 91 percent / CH2Cl2 / 3 h / Heating View Scheme |
t-butyldimethylsiyl triflate
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In dichloromethane at -4 - 20℃; for 0.25h; |
dichloromethane
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
p-toluenesulfonyl chloride
21-chloro-17α-hydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
With triethylamine In methanol; water |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
epoxyparamethasone
Conditions | Yield |
---|---|
methanolic potassium hydroxide |
17α,21-dihydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
p-toluenesulfonyl chloride
21-chloro-17α-hydroxy-9β,11β-oxido-16α-methylpregna-1,4-diene-3,20-dione
Conditions | Yield |
---|---|
With triethylamine In methanol; dichloromethane; water |
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