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:2461-46-3
Min.Order:1 Kilogram
FOB Price: $3.0
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:2461-46-3
Min.Order:1 Kilogram
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:2461-46-3
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:2461-46-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Cas:2461-46-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
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:2461-46-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryZhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed
Cas:2461-46-3
Min.Order:1 Kilogram
FOB Price: $2.0
Type:Lab/Research institutions
inquiry1.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:2461-46-3
Min.Order:1 Metric Ton
FOB Price: $7.0 / 8.0
Type:Trading Company
inquiryLower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
Cas:2461-46-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryhigh purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates
Cas:2461-46-3
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:2461-46-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquirybest seller Application:API
Cas:2461-46-3
Min.Order:0
Negotiable
Type:Trading Company
inquiry4,4'-BIS(2,3-EPOXYPROPOXY)BIPHENYLAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Supply top quality products with a reasonable price Application:api
Best quality with low price Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai
Cas:2461-46-3
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:2461-46-3
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:2461-46-3
Min.Order:0
Negotiable
Type:Trading Company
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:2461-46-3
Min.Order:0
Negotiable
Type:Trading Company
inquiryQingdao Sigma Chemical Ltd is is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, peptide,Nootropis etc API, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc. Our Labo
Cas:2461-46-3
Min.Order:1 Gram
FOB Price: $1.0
Type:Trading Company
inquiryUnited 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:2461-46-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryJoyinchem have been committed to chemical supply for several years and have built good cooperation records with multinational chemical corporations and importers from all over the world. Our services include:-Spot goods-Contract manufacturing-Custom
Cas:2461-46-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryOxirane,2,2'-[[1,1'-biphenyl]-4,4'-diylbis(oxymethylene)]bis-Appearance:Off white to slight yellow solid Storage:Store in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/Pharmaceutical intermediates
Cas:2461-46-3
Min.Order:0
Negotiable
Type:Trading Company
inquiryManufacturer,strong R&D,professional team Storage:Store in a cool, dry place. Store in a tightly closed container. Package:according to your requirement Application:ZhiShang Chemical is owned by ZhiShang Group, is a professional new-type chemicals en
Cas:2461-46-3
Min.Order:0
Negotiable
Type:Trading Company
inquiry4,4'-Dihydroxybiphenyl
epichlorohydrin
4,4'-bis(2,3-epoxypropoxy)biphenyl
Conditions | Yield |
---|---|
Stage #1: 4,4'-Dihydroxybiphenyl With sodium hydride In N,N-dimethyl-formamide for 0.166667h; Inert atmosphere; Stage #2: epichlorohydrin In N,N-dimethyl-formamide at 20℃; for 48h; Inert atmosphere; Stage #3: With water In N,N-dimethyl-formamide at 20℃; Inert atmosphere; | 68% |
With sodium hydroxide | 65% |
With tetramethylammonium bromide In dimethyl sulfoxide at 80℃; for 0.666667h; | 53% |
Heating; | |
Stage #1: 4,4'-Dihydroxybiphenyl; epichlorohydrin With trimethylbenzylammonium bromide for 0.666667h; Reflux; Stage #2: With sodium hydroxide at 20℃; for 4h; Reflux; |
4,4'-Dihydroxybiphenyl
epichlorohydrin
B
4,4'-bis(2,3-epoxypropoxy)biphenyl
Conditions | Yield |
---|---|
With potassium hydroxide at 20℃; Title compound not separated from byproducts; |
Conditions | Yield |
---|---|
With sodium sulfate; methyloxirane; potassium hydroxide In chloroform |
Conditions | Yield |
---|---|
Stage #1: 4,4'-bis(2,3-epoxypropoxy)biphenyl; epichlorohydrin With potassium hydroxide at 20℃; Stage #2: diethylamine In ethanol | 50% |
4,4'-bis(2,3-epoxypropoxy)biphenyl
Conditions | Yield |
---|---|
With cerium(III) chloride heptahydrate In acetonitrile for 16h; Reflux; | 28% |
4,4'-bis(2,3-epoxypropoxy)biphenyl
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: aq. KOH / 20 °C 1.2: 50 percent / ethanol 2.1: 87 percent / acetone / 6 h / Heating View Scheme |
Conditions | Yield |
---|---|
With N-benzyl-N,N,N-triethylammonium chloride; hydroquinone Heating; |
4,4'-bis(2,3-epoxypropoxy)biphenyl
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium hydroxide; tetraethylammonium bromide / tetrahydrofuran; acetonitrile / 2.5 h / 26 °C 2: N-ethyl-N,N-diisopropylamine / acetonitrile / 20 h / 65 °C View Scheme |
Conditions | Yield |
---|---|
With tetraethylammonium bromide; sodium hydroxide In tetrahydrofuran; acetonitrile at 26℃; for 2.5h; |
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