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:4996-21-8
Min.Order:1 Kilogram
FOB Price: $3.0
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:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry1. Product advantages: exquisite appearance and unique functions. 2. Product Advantages: Our products are the best,fast speed ,in large stock 3. High-quality products and thoughtful service are your greatest satisfaction. 4. The product
Cas:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryMassive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and
Cas:4996-21-8
Min.Order:1 Gram
FOB Price: $1.0
Type:Lab/Research institutions
inquiryStock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryR & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou
high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,Pharmaceutical intermediates Transportation:air,sea,courier
Cas:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
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:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry4-Chlorophenylglyoxal hydrate cas 4996-21-8Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Best quality with low price Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai
Cas:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry4996-21-8 Application:intermediate
Cas:4996-21-8
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:any port in China
Cas:4996-21-8
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
Our mission is to provide high-quality and innovative products to our customers. By offering a broad range of products, custom synthesis and personalized services, Bide can help scientists speeding up their research in the chemical and pharmaceutical
1.Professional synthesis laboratory and production base. 2.Strong synthesis team and service team. 3.Professional data management system. 4.We provide the professional test date and product information ,ex. HNMR ,CNMR,FNMR, HPLC/G
Cas:4996-21-8
Min.Order:10 Milligram
Negotiable
Type:Lab/Research institutions
inquiryPrice, service, company and transport advantage: 1.Best service, high quality and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). ? 3. It's customers' right to choose the packing way for his products fro
Cas:4996-21-8
Min.Order:0
Negotiable
Type:Trading Company
inquiryShanghai Sunway Corporation Ltd., a high-tech enterprise specializing in R&D, synthesis, and sales of MOF/COF Ligands, fine chemicals and pharmaceutical intermediates. We have established long-term and good business relationship with suppliers
1. Production capacity: we have three production base with high-tech production equipment and instruments, equipped with professional production personnel, meet your requirements.2. Quality assurance: we have a first-class testing equipment and testi
At Capot,We can synthesize and purify your complex molecules from 100 gram to 10 tons.Appearance:Clear colorless to light yellow liquid Storage:Dry,Seal and Cool place Package:1G,5G,10G,25G,100G,250G,500G,1KG,5KG,10KG,25KG,50KG,100KG,150KG,200KG. App
Cas:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryCool Pharm Ltd, found in 4277,is a high-tech enterprise which provides customer synthesis service for domestic and international pharmaceutical companies according to international standards. Our business includes research , development, process opti
FINETECH INDUSTRY LIMITED is a LONDON based CRO company providing drug discovery & development services to worldwide clients. FINETECH INDUSTRY LIMITED supplies the 4-Chlorophenylglyoxal hydrate, CAS:4996-21-8 with the most competitive price and the
4-Chlorophenylglyoxal hydrate Application:80080881
Cas:4996-21-8
Min.Order:1 Gram
FOB Price: $500.0
Type:Trading Company
inquiryR & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou
1 good quality, better price and bettter service;2 Timely delivery;3 100% refunded if parcel is not delivered or poor quality.We will try to satisfy you upon receipt of your reply. I hope that we can become a long-term cooperative partner. Applicatio
1, We supply best price with high quality 2,We could suppli different kinds of package as customer's request 3,Products could be sent by courier/air/sea 1639,We could do customized service Package:As requested Application:Pha
1.We have rich experience in the development and production 2.Our factory is in Shanghai of China,We have convenient traffic conditions.3.We have advanced testing equipment and shipping line. Package:5g, 10g, 50g, 100g, 1kg Application:Pharmaceutical
Comprehensive range product, High quality, Quick shippment, COA with spectras Package:1g Application:pharmaceutical industry, food industry, research
Cas:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryDebyesci is here who supplied several kinds of chemical products to global pharmaceutical, drug discovery, agrochemical and biotechnology industries for four yearsOur key scientific leadership team has gained experience in top research and developmen
Cas:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryHigh quality Application:Pharmaceutial
Cas:4996-21-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryConditions | Yield |
---|---|
With selenium(IV) oxide In 1,4-dioxane; water at 100℃; for 0.25h; Microwave irradiation; | 80% |
Stage #1: para-chloroacetophenone With selenium(IV) oxide; water In 1,4-dioxane for 7h; Reflux; Stage #2: With water for 4h; Reflux; | 69% |
With hydrogen bromide In water; dimethyl sulfoxide at 55℃; | 52% |
Conditions | Yield |
---|---|
With water; hydrogen bromide In dimethyl sulfoxide at 80℃; for 5h; | 70% |
Conditions | Yield |
---|---|
With water Reflux; | |
With water Reflux; | |
With water Reflux; |
diazoacetic acid ethyl ester
1-(4-chloro-phenyl)-2,2-dihydroxy-ethanone
4-methoxy-aniline
ethyl (2R,3S)-3-(4-chlorobenzoyl)-1-(4-methoxyphenyl)aziridine-2-carboxylate
Conditions | Yield |
---|---|
Stage #1: 1-(4-chloro-phenyl)-2,2-dihydroxy-ethanone; 4-methoxy-aniline With (R)-3,3'-bis(tris(4-tert-butylphenyl)silyl)-1,1'-binaphthyl-2,2'-diyl hydrogenphosphate In toluene at 20℃; for 1h; Stage #2: diazoacetic acid ethyl ester In toluene at -30℃; for 23h; aza-Darzens reaction; optical yield given as %ee; enantioselective reaction; | 100% |
N-hydroxyurea
1-(4-chloro-phenyl)-2,2-dihydroxy-ethanone
5-(4-chlorophenyl)-3-hydroxyimidazolidine-2,4-dione
Conditions | Yield |
---|---|
Stage #1: N-hydroxyurea; 1-(4-chloro-phenyl)-2,2-dihydroxy-ethanone In acetonitrile at 20℃; for 51h; Stage #2: In acetonitrile Reflux; | 100% |
With acetic acid at 18 - 19℃; for 24h; | 69% |
Conditions | Yield |
---|---|
With C23H39N3O3; copper(II) bis(trifluoromethanesulfonate) In dichloromethane at 20℃; for 3h; Cannizzaro Reaction; Inert atmosphere; Molecular sieve; Schlenk technique; enantioselective reaction; | 99% |
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