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
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inquiryNow we would like to update our product list for you, kindly check the below information: 1. Catalyst series ( such as Noble Metal Catalyst, Phosphorous ligand, etc ) 2. Pharmaceutical Intermediate ( such as diabtes series, Anti
Our 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
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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
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inquiry4,4'-azobis(phenol) CAS:2050-16-0 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 quality organic in
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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
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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
A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
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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
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inquiryHigh 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
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inquirySAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in custom synthe
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inquiryR & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates
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Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
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inquiryhigh 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
Ansciep 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
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inquiryWe product this chemical more than 10 years . We are very experience to export it to many countries, Our superior & stable quality , competitive price gain warm reception from our customers. Application:Chemical intermediate
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inquiryPhenol,4,4'-(1,2-diazenediyl)bis- cas 2050-16-0Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
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Best Seller, High Quality, Competitive Price, Fast Delivery, Quick ResponseAppearance:powder, or liquid Storage:Stored in room temperature, ventilated place Package:Bottle, barrel, cargo, container, etc. Application:Pharmaceuticals, intermediates, AP
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inquiryConditions | Yield |
---|---|
Stage #1: 4-nitro-phenol In ethanol for 0.0333333h; Stage #2: With sodium tetrahydroborate In ethanol for 0.666667h; Reflux; | 91% |
With potassium hydroxide at 210 - 215℃; | 90% |
With 4,4'-di-tert-butylbiphenyl; lithium; iron(II) chloride In tetrahydrofuran for 3.5h; Heating; | 81% |
Conditions | Yield |
---|---|
With cetyl-trimethylammonium dichromate In chloroform for 3h; Heating; | 85% |
Stage #1: 4-amino-phenol With hydrogenchloride In water at 23 - 25℃; for 0.5h; Stage #2: With sodium nitrite In water at 0℃; for 2h; Stage #3: With ammonium hydroxide; copper(ll) sulfate pentahydrate; hydroxylamine hydrochloride In water at 0℃; | 54% |
Stage #1: 4-amino-phenol With hydrogenchloride In water at 20℃; for 0.5h; Stage #2: With sodium nitrite In water for 3h; Stage #3: With copper(ll) sulfate pentahydrate; hydroxylamine hydrochloride; ammonia In water | 51% |
Conditions | Yield |
---|---|
Stage #1: 4-amino-phenol With hydrogenchloride; sodium nitrite In water at 0 - 20℃; Stage #2: phenol With sodium hydroxide In water at 20℃; for 12h; | 70.1% |
Stage #1: 4-amino-phenol With hydrogenchloride; sodium nitrite In methanol; water at 0℃; Stage #2: phenol With potassium hydroxide In methanol; water at 20℃; for 2h; | 56.1% |
Stage #1: 4-amino-phenol With hydrogenchloride; sodium nitrite In methanol; water at 0℃; Stage #2: phenol With sodium hydroxide In methanol; water at 20℃; for 2h; | 56.1% |
methanol
N,N'-Bis-(4-fluoro-phenyl)-diazene N-oxide
A
5-methoxy-2-phenyl-2H-indazole
B
5-methoxy-2-(4-methoxyphenyl)-2H-indazole
C
4,4'-dimethoxyazoxybenzene
D
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With N-doped TiO2 In water at 20℃; for 3h; UV-irradiation; Inert atmosphere; | A 13% B 55% C 11% D 10% |
methanol
4,4'-bis(chloro)azoxybenzene
A
5-methoxy-2-phenyl-2H-indazole
B
5-methoxy-2-(4-methoxyphenyl)-2H-indazole
C
4,4'-dimethoxyazoxybenzene
D
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With N-doped TiO2 In water at 20℃; for 3h; UV-irradiation; Inert atmosphere; | A 15% B 45% C 12% D 10% |
methanol
N,N'-Bis-(4-fluoro-phenyl)-diazene N-oxide
A
5-methoxy-2-phenyl-2H-indazole
B
5-methoxy-2-(4-methoxyphenyl)-2H-indazole
C
4,4'-dimethoxyazoxybenzene
D
4-hydroxyazobenzene
E
4-methoxyazobenzene
F
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With N-doped TiO2 In water at 20℃; for 3h; sunlight; Inert atmosphere; | A 10% B 44% C 15% D 7% E 6% F 15% |
4-nitro-phenol
A
4-amino-phenol
B
4,4'-dihydroxyazobenzene
C
4,4'-dihydroxyazoxybenzene
Conditions | Yield |
---|---|
With hydrazine hydrate; nickel(II) nitrate; zinc In tert-butyl alcohol for 0.833333h; Heating; | A 26 % Chromat. B 8 % Chromat. C 40% |
With hydrazine hydrate; nickel(II) nitrate; zinc In ethanol for 4h; Heating; | A 18% B 17 % Chromat. C 20% |
methanol
4,4'-bis(chloro)azoxybenzene
A
5-methoxy-2-phenyl-2H-indazole
B
5-methoxy-2-(4-methoxyphenyl)-2H-indazole
C
4-hydroxyazobenzene
D
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With N-doped TiO2 In water at 20℃; for 3h; sunlight; Inert atmosphere; | A 8% B 40% C 7% D 15% |
bis-(4-oxo-cyclohexa-2,5-dienylidene)-hydrazine
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With diethyl ether; sulphurous acid | |
With phenylhydrazine; benzene |
Conditions | Yield |
---|---|
With potassium hydroxide at 180℃; |
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With hydrogenchloride; ethanol |
Azobenzene
A
(bis-4-hydroxyphenyl)-4,4'-diazobiphenyl
B
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With sulfuric acid at 10 - 12℃; Electrolysis.Oxydation an einer Platin-Anode; |
Conditions | Yield |
---|---|
With potassium hydroxide at 250℃; |
Conditions | Yield |
---|---|
With potassium hydroxide at 250℃; |
Conditions | Yield |
---|---|
With hydrogenchloride at 180℃; |
Conditions | Yield |
---|---|
at 250℃; |
hydrogenchloride
4,4'-diethoxyazoxybenzene
A
chloroethane
B
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
at 130℃; |
Conditions | Yield |
---|---|
With water |
4-hydroxyphenyldiazonium chloride
4,4'-dihydroxyazobenzene
hydrogenchloride
ethanol
4-(2-Amino-[1]naphthylazo)-phenol
A
naphthalen-2-ylamine
B
4,4'-dihydroxyazobenzene
C
phenol
4,4'-dihydroxyazobenzene
4-amino-phenol
A
4-nitro-phenol
B
p-nitrosophenol
C
4,4'-dihydroxyazobenzene
D
4,4'-dihydroxyazoxybenzene
Conditions | Yield |
---|---|
With [(-Ti(H2O)(OH)-O-Ti(H2O)(OH)-O-)*(O*-O-)]n; dihydrogen peroxide In methanol at 25℃; for 0.75h; |
4-(4-nitrophenoxy)butanoic acid
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: benzene 2: aq.-ethanolic sodium acetate / an einer Nickel-Kathode; Behandlung des Reaktionsgemisches mit Luft 3: hydrogen chloride; ethanol View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: aq.-ethanolic sodium acetate / an einer Nickel-Kathode; Behandlung des Reaktionsgemisches mit Luft 2: hydrogen chloride; ethanol View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: alcohol; potassium hydroxide; zinc / Darstellung 2: hydrochloric acid / 180 °C View Scheme |
4-Hydroxy-4'-methoxyazobenzene
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With boron tribromide In dichloromethane |
Conditions | Yield |
---|---|
With cage-bridged Au-Pd dimer at 20℃; Irradiation; |
Conditions | Yield |
---|---|
With potassium hydroxide; Aliquat 336 for 3h; Heating; | 99% |
Conditions | Yield |
---|---|
With potassium hydroxide; Aliquat 336 for 3h; Heating; | 98% |
Conditions | Yield |
---|---|
With potassium hydroxide; Aliquat 336 for 3h; Heating; | 97% |
Conditions | Yield |
---|---|
With zinc In methanol at 25℃; for 0.166667h; Inert atmosphere; | 96% |
With magnesium In methanol at 25℃; for 0.2h; Inert atmosphere; | 95% |
With sodium dithionite; water In dimethyl sulfoxide at 20℃; pH=7.4; Kinetics; phosphate buffer; | |
With hydrogenchloride; tin(ll) chloride | |
With sodium hydroxide; zinc |
Conditions | Yield |
---|---|
With potassium hydroxide; Aliquat 336 for 3h; Heating; | 96% |
1,3-dimethyl 5-(bromomethyl)benzene-1,3-dicarboxylate
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 85℃; for 10h; | 96% |
With potassium carbonate In N,N-dimethyl-formamide at 60℃; for 8h; |
Conditions | Yield |
---|---|
With potassium hydroxide; Aliquat 336 for 3h; Heating; | 95% |
Conditions | Yield |
---|---|
With potassium hydroxide; Aliquat 336 for 3h; Heating; | 93% |
4,4'-dihydroxyazobenzene
<3,3',5,5'-(2)H4>-4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With water-d2; triethylamine at 160℃; for 48h; | 90% |
Conditions | Yield |
---|---|
With 2 wtpercent of Pd on TiO2 In water at 29.84℃; for 8h; UV-irradiation; Inert atmosphere; | 90% |
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 25h; | 88% |
Conditions | Yield |
---|---|
With potassium carbonate In ethanol for 5h; Heating; | 87% |
1-Bromooctadecane
4,4'-dihydroxyazobenzene
4-hydroxy-4'(4-octadecyloxy)diazobenzene
Conditions | Yield |
---|---|
With potassium hydroxide In cyclohexanol for 3h; Heating; | 84.5% |
With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 12h; | 57% |
Conditions | Yield |
---|---|
With potassium carbonate; potassium iodide In N,N-dimethyl-formamide for 12h; Reflux; Inert atmosphere; | 82.4% |
With potassium carbonate; potassium iodide In N,N-dimethyl-formamide for 24h; Inert atmosphere; Reflux; | 80.5% |
With potassium carbonate; potassium iodide In N,N-dimethyl-formamide at 120℃; for 20h; | 46% |
With potassium hydroxide; potassium iodide In ethanol; water for 50h; Heating; | 41% |
With potassium carbonate; potassium iodide In N,N-dimethyl-formamide at 90℃; for 12h; |
di-tert-butyl dicarbonate
4,4'-dihydroxyazobenzene
4-N-tert-butoxycarbonylaminophenol
Conditions | Yield |
---|---|
With polymethylhydrosiloxane; palladium on activated charcoal In ethanol at 20℃; for 5h; | 80% |
4-bromoethylbutanoate
4,4'-dihydroxyazobenzene
ethyl 4-{4-[4-(3-carboethoxypropoxy)phenylazo]phenoxy}butyrate
Conditions | Yield |
---|---|
With potassium carbonate In acetone Reflux; Inert atmosphere; | 80% |
Conditions | Yield |
---|---|
With potassium carbonate In acetone for 80h; Reflux; Inert atmosphere; | 78% |
1,5-dibromo-pentane
4,4'-dihydroxyazobenzene
Bis-[4-(5-bromo-pentyloxy)-phenyl]-diazene
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide for 24h; | 76.9% |
With sodium hydroxide In ethanol Heating; | 17% |
With potassium carbonate In acetonitrile Microwave irradiation; |
Conditions | Yield |
---|---|
In 1,4-dioxane; water dissolving of nitrogen compd. and palladiun compd. in dioxane/water (1:1), stirring at room temp. for one week; concn. under vacuum, isolation of ppt., washing with ethanol and diethylether, drying under vacuum, elem. anal.; | 76% |
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 14h; Inert atmosphere; | 76% |
chloroacetic acid
4,4'-dihydroxyazobenzene
4,4'-bis(carboxymethoxy)azobenzene
Conditions | Yield |
---|---|
With sodium hydroxide | 73% |
Conditions | Yield |
---|---|
With potassium carbonate In ethanol for 0.166667h; Heating; | 70% |
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 96h; Inert atmosphere; Cooling with ice; Schlenk technique; | 70% |
1-dodecylbromide
4,4'-dihydroxyazobenzene
4-<(4-(dodecyloxy)phenyl)azo>phenol
Conditions | Yield |
---|---|
With potassium carbonate; potassium iodide In N,N-dimethyl-formamide at 80℃; for 10h; | 69.5% |
With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 12h; | 53% |
With potassium carbonate In acetone for 6h; Reflux; | 30% |
With potassium hydroxide In ethanol at 50℃; for 24h; |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide for 24h; | 68.5% |
2,3,4,6-tetra-O-acetyl-D-glucopyranosyl 1-(N-phenyl)-2,2,2-trifluoroacetimidate
4,4'-dihydroxyazobenzene
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate In acetonitrile at 20℃; Molecular sieve; | 68% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 14h; Inert atmosphere; | 67% |
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