Dayangchem'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. DayangChem can provide different quantities
Cas:16545-23-6
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryOur Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con
Cas:16545-23-6
Min.Order:1 Kilogram
FOB Price: $1.0 / 10.0
Type:Trading Company
inquiry5,4''-DIHYDROXY-6,7,8-TRIMETHOXYFLAVONE CAS:16545-23-6 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing i
Cas:16545-23-6
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:16545-23-6
Min.Order:1 Kilogram
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
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Lab/Research institutions
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:16545-23-6
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryOur company was built in 2009 with an ISO certificate.In the past 11 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.
Cas:16545-23-6
Min.Order:1 Metric Ton
FOB Price: $500.0
Type:Lab/Research institutions
inquiryJ&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryhigh purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:Beijing or Guangzhou
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquirybest seller Application:API
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Manufacturers
inquiryAnsciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquirybest seller Application:API
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Trading Company
inquiryWe are committed to providing our customers with the best products and services at the most competitive prices.Appearance:white crystalline powder Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Trading Company
inquiry4H-1-Benzopyran-4-one,5-hydroxy-2-(4-hydroxyphenyl)-6,7,8-trimethoxy- cas 16545-23-6Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by expr
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Other
inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryGood Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
best seller Application:API
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Trading Company
inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Trading Company
inquiryHuBei ipure is a diversified product production and operation enterprise, with API, pharma intermediates, and other fine chemicals as well as R&D and pigments development and sales as one of the large enterprises, with more than 130 acres of pl
Cas:16545-23-6
Min.Order:1 Metric Ton
FOB Price: $1.0 / 2.0
Type:Trading Company
inquiryChengdu Push Bio-technology Co., Ltd. provides more than 4,000 natural monomeric substances, including approximately 6,000 products at different grades, specifications and purities. We have specialized in the R&D of medicinally active ingredients sta
4H-1-Benzopyran-4-one,5-hydroxy-2-(4-hydroxyphenyl)-6,7,8-trimethoxy- Storage:keep in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/pharma intermediate Transportation:By Sea,by Air,By courier like
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Trading Company
inquiry4H-1-Benzopyran-4-one,5-hydroxy-2-(4-hydroxyphenyl)-6,7,8-trimethoxy-Appearance:Off white to slight yellow solid Storage:Stored in shaded, cool and dry places Package:1L 5L 10L 25L bottle Application:pharma intermediate Transportation:Handle with car
Cas:16545-23-6
Min.Order:0
Negotiable
Type:Trading Company
inquiry4'-benzyloxy-5,6,7,8-tetramethoxyflavone
xanthomicrol
Conditions | Yield |
---|---|
Stage #1: 4'-benzyloxy-5,6,7,8-tetramethoxyflavone With boron trichloride In dichloromethane; toluene at -78 - 20℃; for 12h; Inert atmosphere; Stage #2: With water; sodium hydroxide In dichloromethane; toluene at 20℃; for 0.5h; | 87% |
Multi-step reaction with 2 steps 1: 120 mg / H2 / Pd-C / ethyl acetate 2: AlCl3 / nitrobenzene / Ambient temperature View Scheme |
4'-hydroxy-5,6,7,8-tetramethoxy flavone
xanthomicrol
Conditions | Yield |
---|---|
With aluminium trichloride In nitrobenzene Ambient temperature; |
p-benzyloxybenzaldehyde
xanthomicrol
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 1.0 g / KOH / aq. ethanol / Ambient temperature 2: 450 mg / 85percent H3PO4 / ethanol / 50 h / Heating 3: 350 mg / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / dioxane / 10 h / Heating 4: 120 mg / H2 / Pd-C / ethyl acetate 5: AlCl3 / nitrobenzene / Ambient temperature View Scheme |
4-benzyloxy-2'-hydroxy-3',4',5',6'-tetramethoxychalcone
xanthomicrol
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 450 mg / 85percent H3PO4 / ethanol / 50 h / Heating 2: 350 mg / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / dioxane / 10 h / Heating 3: 120 mg / H2 / Pd-C / ethyl acetate 4: AlCl3 / nitrobenzene / Ambient temperature View Scheme |
2-hydroxy-3,4,5,6-tetramethoxyacetophenone
xanthomicrol
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 1.0 g / KOH / aq. ethanol / Ambient temperature 2: 450 mg / 85percent H3PO4 / ethanol / 50 h / Heating 3: 350 mg / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / dioxane / 10 h / Heating 4: 120 mg / H2 / Pd-C / ethyl acetate 5: AlCl3 / nitrobenzene / Ambient temperature View Scheme | |
Multi-step reaction with 4 steps 1.1: dmap; triethylamine / dichloromethane / 1 h / 20 °C / Cooling with ice; Inert atmosphere 2.1: potassium tert-butylate / tetrahydrofuran / 1 h / Reflux; Inert atmosphere 3.1: toluene-4-sulfonic acid / benzene / 7 h / Reflux; Inert atmosphere 4.1: boron trichloride / dichloromethane; toluene / 12 h / -78 - 20 °C / Inert atmosphere 4.2: 0.5 h / 20 °C View Scheme |
4'-benzyloxy-5,6,7,8-tetramethoxyflavanone
xanthomicrol
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 350 mg / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / dioxane / 10 h / Heating 2: 120 mg / H2 / Pd-C / ethyl acetate 3: AlCl3 / nitrobenzene / Ambient temperature View Scheme |
2-(4-benzyloxybenzoyloxy)-3,4,5,6-tetramethoxyacetophenone
xanthomicrol
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: potassium tert-butylate / tetrahydrofuran / 1 h / Reflux; Inert atmosphere 2.1: toluene-4-sulfonic acid / benzene / 7 h / Reflux; Inert atmosphere 3.1: boron trichloride / dichloromethane; toluene / 12 h / -78 - 20 °C / Inert atmosphere 3.2: 0.5 h / 20 °C View Scheme |
1-(4-benzyloxyphenyl)-3-(2-hydroxy-3,4,5,6-tetramethoxyphenyl)propane-1,3-dione
xanthomicrol
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: toluene-4-sulfonic acid / benzene / 7 h / Reflux; Inert atmosphere 2.1: boron trichloride / dichloromethane; toluene / 12 h / -78 - 20 °C / Inert atmosphere 2.2: 0.5 h / 20 °C View Scheme |
4-(benzyloxy)benzoic acid chloride
xanthomicrol
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: dmap; triethylamine / dichloromethane / 1 h / 20 °C / Cooling with ice; Inert atmosphere 2.1: potassium tert-butylate / tetrahydrofuran / 1 h / Reflux; Inert atmosphere 3.1: toluene-4-sulfonic acid / benzene / 7 h / Reflux; Inert atmosphere 4.1: boron trichloride / dichloromethane; toluene / 12 h / -78 - 20 °C / Inert atmosphere 4.2: 0.5 h / 20 °C View Scheme |
Conditions | Yield |
---|---|
With potassium carbonate In dichloromethane; acetone for 4h; Reflux; | 44.6% |
Conditions | Yield |
---|---|
With potassium carbonate In dichloromethane; acetone for 4h; Reflux; | A 31.8% B 8% |
xanthomicrol
5,6,4'-trihydroxyl-7,8-dimethoxyflavone
Conditions | Yield |
---|---|
With hydrogenchloride In methanol; water at 100℃; for 48h; | 5% |
xanthomicrol
8-demethylthymusin
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 5 percent / 4N HCl / methanol; H2O / 48 h / 100 °C 2: 30 percent / 4N HCl / methanol; H2O / 4 h / 100 °C View Scheme |
xanthomicrol
6,7-dimethoxy-5,8,4′-trihydroxyflavone
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 5 percent / 4N HCl / methanol; H2O / 48 h / 100 °C 2: 10 percent / 4N HCl / methanol; H2O / 4 h / 100 °C View Scheme |
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