DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe
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:81-82-3
Min.Order:1 Kilogram
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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:81-82-3
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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:81-82-3
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inquiry1.In No Less 10 years exporting experience. you 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 Specializ
Cas:81-82-3
Min.Order:1 Gram
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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 present
Cas:81-82-3
Min.Order:1 Kilogram
FOB Price: $45.0 / 60.0
Type:Trading Company
inquiryProduct Detail Minimum Order Qty. 10 Gram
Cas:81-82-3
Min.Order:20 Metric Ton
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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
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inquiryJ&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
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1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer
Cas:81-82-3
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FOB Price: $7.0 / 8.0
Type:Trading Company
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation
high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS
Cas:81-82-3
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inquiry3-(1-(4-Chloorfenyl)-3-Oxo-Butyl)-4-Hydroxy-CumarineAppearance:white powder Storage:Keep away of light,cool place Package:25kg/drum;200kg/drum Application:Agrochemical Intermediate Transportation:Sea/air/courier
Cas:81-82-3
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inquiryFAMARINAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
high 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:any port in China
high 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:any port in China
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Henan Sunlake Enterprise Corporation Our Advantages 1, Any inquiry about ch
Cas:81-82-3
Min.Order:1 Kilogram
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inquiryPrice, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right
Cas:81-82-3
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inquiryWatson International Ltd' has a very strong R&D and technical capacity supported by FCAD's platform. The subsidiaries under FCAD Group have accumulated much know-how of different fine chemical branches. For example, Apnoke Scientific L
BaiFuChem is a Professional chemical raw material supplier in China, our main products include Biochemical , Pharma Intermediate and Organic chemical etc. BaiFuChem have wealth of products,experience , expertise and state-of-the-art
Cas:81-82-3
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inquiryfactory,reasonable price Appearance:detailed see specifications Storage:Store in dry, dark and ventilated place. Package:according to the clients requirement Application:pharmaceutical intermediates Transportation:by courier,air or sea Port:S
United Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat
Cas:81-82-3
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inquiry4-hydroxy[1]benzopyran-2-one
(3E)-4-(4-chlorophenyl)-3-buten-2-one
coumachlor
Conditions | Yield |
---|---|
With polystyrene-divinylbenzene support prepared with 1-chlorodecane as porogen with immobilized 1,5,7-triazabicyclo[4.4.0]dec-5-ene at 100℃; for 96h; Reagent/catalyst; Time; Michael Addition; Green chemistry; | 96% |
4-(4-chlorophenyl)-3-buten-2-one
4-hydroxy[1]benzopyran-2-one
coumachlor
Conditions | Yield |
---|---|
With N-benzyl-N,N,N-triethylammonium chloride In water for 14h; Heating; | 75% |
Michael Addition; |
4-hydroxy[1]benzopyran-2-one
2-Methoxypropene
4-chlorobenzaldehyde
coumachlor
Conditions | Yield |
---|---|
Stage #1: 4-hydroxy[1]benzopyran-2-one; 2-Methoxypropene; 4-chlorobenzaldehyde With ethylenediamine diacetic acid In 1,4-dioxane at 90℃; tandem Knoevenagel-hetero-Diels-Alder reaction; Stage #2: With hydrogenchloride; silica gel In water; trifluoroacetic acid at 20℃; |
coumachlor
(1R,2S,5R)-menthyl chloroformate
Conditions | Yield |
---|---|
With TEA In 1,2-dichloro-ethane for 0.5h; Ambient temperature; | 100% |
coumachlor
3-nitro-benzaldehyde
4-hydroxy-3-[1-(4-chloro-phenyl)-5-(3-nitro-phenyl)-3-oxo-pent-4-enyl]-chromen-2-one
Conditions | Yield |
---|---|
With sodium hydroxide In water at 20℃; | 95% |
coumachlor
3-fluoro-3-<1-(4-chlorophenyl)-3-oxobutyl>-2H-benzopyran-2,4-dione
Conditions | Yield |
---|---|
With N-fluorobis<(trifluoromethyl)sulfonyl>imide In chloroform; water at 35℃; for 0.25h; | 90% |
coumachlor
4-chlorobenzaldehyde
4-hydroxy-3-[1,5-bis(4-chloro-phenyl)-3-oxo-pent-4-enyl]-chromen-2-one
Conditions | Yield |
---|---|
With sodium hydroxide In water at 20℃; | 90% |
coumachlor
4-methoxy-benzaldehyde
4-hydroxy-3-[1-(4-chloro-phenyl)-5-(4-methoxy-phenyl)-3-oxo-pent-4-enyl]-chromen-2-one
Conditions | Yield |
---|---|
With sodium hydroxide In water at 20℃; | 90% |
coumachlor
benzaldehyde
4-hydroxy-3-[1-(4-chloro-phenyl)-3-oxo-5-phenyl-pent-4-enyl]-chromen-2-one
Conditions | Yield |
---|---|
With sodium hydroxide In water at 20℃; | 88% |
furfural
coumachlor
4-hydroxy-3-[1-(4-chloro-phenyl)-5-furan-2-yl-3-oxo-pent-4-enyl]-chromen-2-one
Conditions | Yield |
---|---|
With sodium hydroxide In water at 20℃; | 85% |
coumachlor
Conditions | Yield |
---|---|
With pyridine; sodium hydroxide; hydroxylamine hydrochloride In ethanol 1) 12 h, 2) reflux, 6 h; | 74% |
coumachlor
dimethylsulfoxonium methylide
Conditions | Yield |
---|---|
With sodium hydrogencarbonate 1.) DMSO, THF, 2.) H2O, 5 h; Yield given. Multistep reaction. Yields of byproduct given; |
coumachlor
Conditions | Yield |
---|---|
In ethanol; water for 0.333333h; pH=9; complexation; sonication; |
coumachlor
A
(R)-3-(1-(4-chlorophenyl)-3-oxobutyl)-4-hydroxy-2H-chromen-2-one
B
(S)-3-(1-(4-chlorophenyl)-3-oxobutyl)-4-hydroxy-2H-chromen-2-one
Conditions | Yield |
---|---|
With teicoplanin In methanol; water Product distribution; Further Variations:; Reagents; pH-values; Solvents; | |
With N-3,5-dimethylphenylcarbamoyl-derivatized cyclofructan-6 column In n-heptane; isopropyl alcohol; trifluoroacetic acid at 20℃; Resolution of racemate; | |
With chiral stationary phase including 3,5-dimethylphenyl-functionalized CF7 In ethanol; n-heptane; trifluoroacetic acid at 20℃; Purification / work up; |
Conditions | Yield |
---|---|
With pyridine at 70℃; for 6h; | 75 mg |
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