As 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 services. DayangChem can provide different quantities of custom synthesis ch
Cas:92-78-4
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryWelcome 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
Hebei yanxi chemical co., LTD is a professional research, development and production of lead acetate benzene acetamide enterprise backbone members by local well-known entrepreneurs and professional senior engineers in the party's "low carb
iso Azoic Coupling Component 10 92-78-4 C17H12ClNO2 297.74 202-189-7 Light beige powder Melting Point: 255 °C Water Solubility: Insoluble Appearance:Light beige powder Storage:Stored in cool, dry and ventilation place
The 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:92-78-4
Min.Order:1
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Type:Other
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:92-78-4
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryAbout Product Details
Cas:92-78-4
Min.Order:1 Kilogram
FOB Price: $1.0 / 5.0
Type:Lab/Research institutions
inquiryOur 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
Cas:92-78-4
Min.Order:1 Kilogram
FOB Price: $15.0 / 50.0
Type:Trading Company
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
Cas:92-78-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
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:92-78-4
Min.Order:10 Gram
FOB Price: $146.0 / 176.0
Type:Trading Company
inquiryChemical Name: Naphthol AS-E CAS No.: 72-78-4 Molecular Fomula: C17H12ClNO2 Molecular weight: 297.74 Appearance: Light beige powder Assay: 98.5%min Appearance: white powder Storage:Store in cool and dry place, away from sun light. Package:
1.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:92-78-4
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:92-78-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryProduct Detail Minimum Order Qty. 10 Gram
Cas:92-78-4
Min.Order:20 Metric Ton
Negotiable
Type:Trading Company
inquiryBest quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia
J&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
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:92-78-4
Min.Order:1 Metric Ton
FOB Price: $7.0 / 8.0
Type:Trading Company
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
Lower 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:92-78-4
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
Shanghai Lonwin Chemical company is a subsidiary of Lonwin Industry Group Limited, was established in 2011 and is headquartered in Shanghai, adjacent to China National Convention and Exhibition Center and Hongqiao transportation hub.Lonwinchem is
Cas:92-78-4
Min.Order:100 Kilogram
FOB Price: $100.0 / 150.0
Type:Other
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
Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS
TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp
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
Cas:92-78-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryAppearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China
good quality, competitive price, thoughtful after sale serviceAppearance:white powder Storage:Keep it in dry,shady and cool place Package:25kg,50kg,180kg,200kg,250kg,1000kg,customization Application:Pharma;Industry;Agricultural;chemical reaserch Tran
We are committed to providing our customers with the best products and services at the most competitive prices.Appearance:white powder Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use as primary a
Naphthol AS-E cas 92-78-4Appearance: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
Conditions | Yield |
---|---|
With phosphorus trichloride In chlorobenzene at 100 - 130℃; for 0.75h; Microwave irradiation; | 71% |
With phosphorus trichloride 1) xylene, 80 deg C, 10 min; 2) xylene, reflux, 2 h; Multistep reaction; | |
Acylation; |
Conditions | Yield |
---|---|
at 220℃; |
Conditions | Yield |
---|---|
With sodium acetate In N,N-dimethyl-formamide; chlorobenzene at 5 - 50℃; |
naphthol AS-E
Conditions | Yield |
---|---|
With water at 37℃; for 29.2h; Kinetics; |
Conditions | Yield |
---|---|
Stage #1: 1-(p-sulphophenyl)-3-methyl-4-amino-5-pyrazolone With hydrogenchloride; sodium nitrite In water at 0 - 5℃; for 1h; Stage #2: naphthol AS-E With sodium carbonate; sodium hydroxide In water at 0 - 5℃; for 4.5h; pH=8 - 9; | 80.72% |
N-tert-butoxycarbonyl-3-aminopropanol
naphthol AS-E
tert-butyl (3-((3-((4-Chlorophenyl)carbamoyl)naphthalen-2-yl)oxy)propyl)carbamate
Conditions | Yield |
---|---|
With triphenylphosphine; diethylazodicarboxylate In tetrahydrofuran at 0 - 20℃; | 78% |
With triphenylphosphine; diethylazodicarboxylate In tetrahydrofuran at 0 - 20℃; | 77% |
naphthol AS-E
11-amino-3-bromo-13H-acenaphtho[1,2-e]pyridazino[3,2-b]quinazoline-13-one
Conditions | Yield |
---|---|
Stage #1: 11-amino-3-bromo-13H-acenaphtho[1,2-e]pyridazino[3,2-b]quinazoline-13-one With hydrogenchloride; sodium nitrite at 0 - 5℃; Stage #2: naphthol AS-E In alkaline aq. solution at 0 - 5℃; | 70% |
oxalyl dichloride
naphthol AS-E
3-(4-chlorophenyl)-2H-naphtho[2,3-e][1,3]oxazine-2,4-(3H)-dione
Conditions | Yield |
---|---|
In para-xylene at 120℃; | 52% |
naphthol AS-E
tert-butyl N-tosyloxycarbamate
3-{[(tert-butoxycarbonyl)amino]oxy}-2-naphthoic acid
Conditions | Yield |
---|---|
Stage #1: naphthol AS-E With potassium hexamethylsilazane In tetrahydrofuran at 0℃; for 0.25h; Stage #2: tert-butyl N-tosyloxycarbamate With n-butyllithium In tetrahydrofuran at -78 - 0℃; | 31% |
2,3-Dichloro-1,4-naphthoquinone
naphthol AS-E
8,13-dioxo-8,13-dihydro-dinaphtho[2,1-b;2',3'-d]furan-6-carboxylic acid-(4-chloro-anilide)
Conditions | Yield |
---|---|
With pyridine |
naphthol AS-E
chloroformic acid ethyl ester
3-(4-chlorophenyl)-2H-naphtho[2,3-e][1,3]oxazine-2,4-(3H)-dione
Conditions | Yield |
---|---|
In pyridine |
naphthol AS-E
Conditions | Yield |
---|---|
With phosphorus pentachloride In 1,4-dioxane at 50℃; for 1h; |
naphthol AS-E
Conditions | Yield |
---|---|
Stage #1: 1,5-diaminoanthraquinone With hydrogenchloride; sodium nitrite Diazotization; Stage #2: naphthol AS-E With sodium acetate Substitution; |
Conditions | Yield |
---|---|
With sodium hydroxide In methanol |
naphthol AS-E
3-{[(tert-butoxycarbonyl)amino]oxy}-2-naphthoic methanesulfonic anhydride
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: potassium hexamethylsilazane / tetrahydrofuran / 0.25 h / 0 °C 1.2: -78 - 0 °C 2.1: triethylamine / tetrahydrofuran / 4 h / 0 - 20 °C View Scheme |
naphthol AS-E
tert-butyl {3-[(4-chlorophenyl)carbamoyl]naphthalen-2-yl}oxycarbamate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: potassium hexamethylsilazane / tetrahydrofuran / 0.25 h / 0 °C 1.2: -78 - 0 °C 2.1: triethylamine / tetrahydrofuran / 4 h / 0 - 20 °C 3.1: dmap / toluene / 140 °C / Sealed tube View Scheme |
naphthol AS-E
3-[(tert-butylamino)oxy]-N-(4-chlorophenyl)-2-naphthamide
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: potassium hexamethylsilazane / tetrahydrofuran / 0.25 h / 0 °C 1.2: -78 - 0 °C 2.1: triethylamine / tetrahydrofuran / 4 h / 0 - 20 °C 3.1: dmap / toluene / 140 °C / Sealed tube 4.1: hydrogenchloride / methanol; diethyl ether; chloroform / 20 °C View Scheme |
naphthol AS-E
3-(3-aminopropoxy)-N-(4-chlorophenyl)-2-naphthamide
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: diethylazodicarboxylate; triphenylphosphine / tetrahydrofuran / 0 - 20 °C 2: hydrogenchloride / diethyl ether; chloroform; methanol / 20 °C View Scheme |
naphthol AS-E
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: diethylazodicarboxylate; triphenylphosphine / tetrahydrofuran / 0 - 20 °C 2: hydrogenchloride / diethyl ether; chloroform; methanol / 20 °C 3: (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / dichloromethane / 0.08 h / 20 °C View Scheme |
Conditions | Yield |
---|---|
Stage #1: 2-methyl-5-nitroaniline With hydrogenchloride In water at 70℃; for 1h; Stage #2: With sodium nitrite In water for 1.5h; Stage #3: naphthol AS-E Further stages; |
naphthol AS-E
3-(3-aminopropoxy)-N-(4-chlorophenyl)-2-naphthamide hydrochloride
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: triphenylphosphine; diethylazodicarboxylate / tetrahydrofuran / 0 - 20 °C 2: hydrogenchloride / tetrahydrofuran; water / 20 °C View Scheme |
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