We are very strong on this item. Package:25kgs net carton drums Application:490-46-0 Port:SHANGHAI
Our 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 pres
Cas:490-46-0
Min.Order:1 Kilogram
FOB Price: $1258.0 / 1267.0
Type:Trading Company
inquiryChengdu Biopurify Phytochemicals Ltd. is a leading company in the research, development, manufacture and marketing of High Quality Phytochemicals and Extracts(especially Active Ingredients from Traditional Chinese Medicine,Traditional Chinese Medic
Known for its best quality and competitve price, this chemicals we offered is widely appreciated by our customers.Appearance:White powder Storage:keep sealed and keep from direct light Package:According client's requirements Application:pharmaceutica
Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our
Cas:490-46-0
Min.Order:0 Metric Ton
Negotiable
Type:Manufacturers
inquiryUnique advantages of L-Epicatechin Cas 490-46-0 Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:Off-white powder Storage:Cool dry place Package:1kg/foil bag Applica
Cas:490-46-0
Min.Order:1 Kilogram
Negotiable
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
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
Cas:490-46-0
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryCAS: 490-46-0 Molecular Formula: C15H14O6 Home Product Category Biochemistry Ingredients of Chinese herbal medicine 490-46-0 490-46-0 - Names and Identifiers Name 2-(3,4-dihydroxyphenyl)-2,3,4-trihydro-3,5,7-trihydroxychromene
Cas:490-46-0
Min.Order:1 Kilogram
FOB Price: $159.0 / 170.0
Type:Trading Company
inquiryShanghai 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
Cas:490-46-0
Min.Order:1 Kilogram
FOB Price: $1.0
Type:Manufacturers
inquiryAs 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:490-46-0
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
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:490-46-0
Min.Order:1 Kilogram
FOB Price: $1.0 / 3.0
Type:Trading Company
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
Why is SINOWAY: 1) Specialized in pharmaceutical and healthcare industrial for 34 years. 2) ISO 9001:2015 & SGS audited supplier . 3) Accept various payment terms : T.T 30-60 days. 4) We have warehouse in USA with quickly shipment . 5) We c
Cas:490-46-0
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryProduct Name: L-Epicatechin Synonyms: EC, L-Epicatechin;L-Epicatechin 2-(3,4-Dihydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-3,5,7-triol;Table son tea;(-)-Epicatechin, >=98%;(-)-Epicatechin, 98%, from green tea;5,7-trihydroxychromene;(-)-EC;(+)-EC
Cas:490-46-0
Min.Order:1 Kilogram
FOB Price: $230.0
Type:Lab/Research institutions
inquiryWith 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:490-46-0
Min.Order:10 Gram
FOB Price: $146.0 / 176.0
Type:Trading Company
inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W
Cas:490-46-0
Min.Order:1 Kilogram
FOB Price: $370.0 / 499.0
Type:Trading Company
inquiryMOQ: 1kg Form: Powder Colour: White Test: HPLC Function: Antioxidant Grade: Pharm Appearance:white Storage:room Package:drum Application:Antioxidant Port:Shanghai/Wu
Cas:490-46-0
Min.Order:10 Gram
Negotiable
Type:Trading Company
inquiryAppearance:White to light yellow crystal powder Storage:Room temperature Package:25kg/drum Application:Anti-oxidize effect Transportation:Express/Sea/Air Port:Any port in china
Cas:490-46-0
Min.Order:1 Kilogram
Negotiable
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 containers
Cas:490-46-0
Min.Order:100 Gram
Negotiable
Type:Other
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:490-46-0
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
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:490-46-0
Min.Order:10 Gram
FOB Price: $3.5
Type:Trading Company
inquiryL-Epicatechin CAS: 490-46-0 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 organic intermediate
Cas:490-46-0
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:490-46-0
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
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:490-46-0
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
PRODUCT DETAILS
Cas:490-46-0
Min.Order:500 Kilogram
FOB Price: $1.0 / 2.0
Type:Lab/Research institutions
inquiryShanghai SOYOUNG onsite assessment conducted by Bureau Veritas commissioned at June 2018. Assessed Supplier of Shanghai SOYOUNG is a faithful and professional supplier of health raw materials in pharmacy, food, cosmetic and other fields for many ye
Cas:490-46-0
Min.Order:25 Kilogram
FOB Price: $480.0
Type:Lab/Research institutions
inquiry1,we produce and sell good chemicals around the world. 2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered
Cas:490-46-0
Min.Order:1 Kilogram
FOB Price: $447.16 / 745.27
Type:Trading Company
inquiryA
(+)-epicatechin
B
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
Conditions | Yield |
---|---|
With CHIRAL PAKIC In ethanol; hexane at 20℃; Resolution of racemate; | A 85% B 84% |
With CHIRAL PAK IC (250 X 4.6) mm, 5μ column In methanol at 25℃; Product distribution / selectivity; Resolution of racemate; | |
With CHIRAL PAK In methanol at 25℃; Resolution of racemate; |
5,7,3',4'-tetra-O-benzylepicatechin
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
Conditions | Yield |
---|---|
With 5% Pd(OH)2/C; hydrogen In tetrahydrofuran; methanol; water at 20℃; for 0.5h; | 69% |
With hydrogen; palladium(II) hydroxide In ethyl acetate at 20℃; for 40h; | |
With hydrogen; palladium(II) hydroxide In ethyl acetate at 20℃; for 40h; | 0.010 mg |
A
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
B
catechin
Conditions | Yield |
---|---|
With palladium 10% on activated carbon; hydrogen In methanol; ethyl acetate at 20 - 55℃; | A 55% B n/a |
(-)-epicatechin gallate
B
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
Conditions | Yield |
---|---|
With Diaporthe sp In methanol at 27℃; for 24h; | A 53% B 13% |
procyanidin B1
A
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
B
catechin
Conditions | Yield |
---|---|
With sodium cyanoborohydride In trifluoroacetic acid at 0℃; for 1h; Title compound not separated from byproducts; | A 21% B 20% |
procyanidin B2
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
Conditions | Yield |
---|---|
With hydrogenchloride for 0.5h; heating on a boiling water bath; | |
Multi-step reaction with 2 steps 1: ethanol / 1 h / boiling water bath 2: Raney nickel / ethanol / 2 h / Ambient temperature View Scheme |
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