ELEUTHEROSIDE E1 Basic information Product Name: ELEUTHEROSIDE E1 Synonyms: ELEUTHEROSIDE B+E;ELEUTHEROSIDE E1;ELEUTHEROSIDES, SIBERIAN GINSENG PLANT EXTRACT B+E >0.8%;ELEUTHEROSIDES, SIBERIAN GIN
Cas:3234-02-4
Min.Order:1 Gram
Negotiable
Type:Other
inquiryProduct description: Product name 2,3-Dibromo-2-butene-1,4-diol CAS number 3234-02-4 Assay ≥99% Appearance White crystalline powder Capacity 200mt/year Application Organic sy
Cas:3234-02-4
Min.Order:10 Gram
FOB Price: $12.0
Type:Lab/Research institutions
inquiryhigh quality Appearance:White or off-white Solid Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea Port:shanghai
Cas:3234-02-4
Min.Order:1 Kilogram
Negotiable
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 according to the contract research and development services for the fine c
Cas:3234-02-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
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:3234-02-4
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:3234-02-4
Min.Order:1 Kilogram
FOB Price: $9.0 / 99.0
Type:Trading Company
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:3234-02-4
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
Cas:3234-02-4
Min.Order:10 Kilogram
FOB Price: $20.0 / 30.0
Type:Trading Company
inquiryProduct Name trans-2,3-Dibromo-2-butene-1,4-diol Appearance white crystalline powder Synonyms 2,3-dibromo-2-butene-4-diol;4-diol
Cas:3234-02-4
Min.Order:5 Metric Ton
FOB Price: $1.0 / 2.0
Type:Other
inquiryAppearance:White crystalline powder Storage:ln stock Package:25kg/Barrel Application:High temperature initiating high-efficiency peptizer Transportation:Express/Sea/Air Port:Shanghai
Cas:3234-02-4
Min.Order:100 Kilogram
FOB Price: $14.9 / 20.0
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:3234-02-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquirytrans-2,3-Dibromo-2-butene-1,4-diol CAS:3234-02-4 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 qualit
Cas:3234-02-4
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:3234-02-4
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:3234-02-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryHangzhou Fanda Chemical Co.,Ltd (FandaChem) , a China-based chemical company, specialize in exporting 2,3-Dibromo-2-butene-1,4-diol CAS:3234-02-4 , Please contact us by email freely. We are leading exporter in China. If you really nee
Cas:3234-02-4
Min.Order:0 Metric Ton
Negotiable
Type:Other
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:3234-02-4
Min.Order:0 Metric Ton
Negotiable
Type:Lab/Research institutions
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
Cas:3234-02-4
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:3234-02-4
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryWe are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov
Cas:3234-02-4
Min.Order:100 Gram
FOB Price: $100.0 / 2000.0
Type:Lab/Research institutions
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:3234-02-4
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
inquiryfactory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B
Cas:3234-02-4
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
inquiryProduct name: Trans-2,3-Dibromo-2-Butane-1,4-diol CAS No.:3234-02-4 Molecule Formula:C4H6Br2O2 Molecule Weight:245.90 Purity: 99.0% Package: 25kg/drum Description:White crystals or white powder Manufacture Standards:Enterprise Standar
Cas:3234-02-4
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryShandong Mopai Biotechnology 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 chemicals. W
Cas:3234-02-4
Min.Order:1 Gram
Negotiable
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:3234-02-4
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
High quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
Cas:3234-02-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryWe are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp
Cas:3234-02-4
Min.Order:1 Metric Ton
FOB Price: $1.0
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:3234-02-4
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
Why is SINOWAY:1) Specialized in pharmaceutical and healthcare industrial since 19872) 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 . Application:API
Cas:3234-02-4
Min.Order:0
Negotiable
Type:Trading Company
inquiryConditions | Yield |
---|---|
With tetraethylammonium bromide; bromine In dichloromethane at 20 - 30℃; for 8h; Green chemistry; | 95% |
With hexamethonium bis(tribromide) In neat (no solvent) for 0.333333h; Green chemistry; regioselective reaction; | 88% |
With tetrabutylammomium bromide; dihydrogen peroxide; vanadia In water; acetonitrile at 5℃; for 1.5h; Bromination; | 46% |
2,3-dibromo-but-2-ene-1,4-diol
Conditions | Yield |
---|---|
With sodium ethanolate |
2,3-dibromo-but-2-ene-1,4-diol
3,4-dibromofuran
Conditions | Yield |
---|---|
With potassium dichromate; sulfuric acid In hexane; water at 85℃; for 6h; Heating; | 83% |
With potassium dichromate; sulfuric acid In water at 140℃; for 4h; | 56% |
Conditions | Yield |
---|---|
With ethanol; zinc |
2,3-dibromo-but-2-ene-1,4-diol
acetyl chloride
1,4-diacetoxy-2,3-dibromo-but-2-ene
Conditions | Yield |
---|---|
With sodium hydroxide In water; toluene at 70 - 72℃; for 4h; | 42.5 g |
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