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:541-50-4
Min.Order:1 Kilogram
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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
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Cas:541-50-4
Min.Order:1 Kilogram
FOB Price: $1.0 / 10.0
Type:Trading Company
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:541-50-4
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:541-50-4
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
Our 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:541-50-4
Min.Order:10 Kilogram
Negotiable
Type:Trading Company
inquiryTriumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Business Custom Synthesis: Trading(Raw Mater
Cas:541-50-4
Min.Order:0 Metric Ton
FOB Price: $18.0 / 20.0
Type:Lab/Research institutions
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:541-50-4
Min.Order:0 Metric Ton
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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
Zibo 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:541-50-4
Min.Order:10 Gram
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Type:Lab/Research institutions
inquiryEnglish name: Acetoacetic Acid English synonyms: Acetoacetic Acid;3-oxobutanoic acid;acetoncarboxylic acid;3-ketobutanoic acid 3-oxobutanoic acid;acetylacetic acid;diacetic acid;ACETOACETATE;3-ketobutyric acid CAS Number
Cas:541-50-4
Min.Order:1 Metric Ton
FOB Price: $20.0
Type:Lab/Research institutions
inquiryOur Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an
factory?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
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Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
inquiryProduct Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
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Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
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Cas:541-50-4
Min.Order:1 Kilogram
FOB Price: $2.0
Type:Lab/Research institutions
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:541-50-4
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:541-50-4
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiryGOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation
We 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
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Min.Order:1 Metric Ton
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Type:Trading Company
inquiry1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification
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
R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates
high purity Storage:normal temperature Package:DRUM Application:mainly for medical use for R&Dpurpose use only Transportation:AIR,SEA Port:BEIJING,SHANGHAI,TIANJIN,SHENZHEN
1,we produce and sell good chemicals around the world.2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%.3,our staff consists of highly qualified in
1. Product advantages? High purity, all above 98.5%, no impurities after dissolution? We will test each batch to ensure quality? OEM and private brand services designed for free? Various cap colors available? We can also provide MT1 peptide powder2.
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
We are a trading company aiming at providing high-quality services to customers. Established for many years, with good reputation in the industry Storage:Sealed and preserved Application:Fine chemical intermediates, used as the main raw material for
Cas:541-50-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
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:intermediate
Conditions | Yield |
---|---|
With water at 90℃; Column which a srtongly acidic cation exchanger in the H+ form; | A n/a B 99.6% |
Conditions | Yield |
---|---|
With trifluoroacetic acid In dichloromethane at 0 - 20℃; | 87% |
With trifluoroacetic acid | 63% |
With trifluoroacetic acid Ambient temperature; | |
With water |
Conditions | Yield |
---|---|
With water; sodium hydroxide at 60℃; for 3h; | 80% |
With potassium hydroxide In water at 20℃; Inert atmosphere; | 22% |
With sodium hydroxide |
Conditions | Yield |
---|---|
Stage #1: acetoacetic acid methyl ester With sodium hydroxide; water at 20℃; for 18h; Stage #2: With ammonium sulfate Stage #3: With hydrogenchloride In water at 0℃; | 60% |
Stage #1: acetoacetic acid methyl ester With sodium hydroxide; water at 20℃; for 18.3333h; Stage #2: With hydrogenchloride; water at 0℃; | 60% |
With hydrogenchloride; sodium methylate 1.) MeOH, H2O, 8 h; Yield given; Multistep reaction; | |
With water; sodium hydroxide for 6h; Cooling; |
4-hydroxy-3,5-di-tert-butylthiophenol
ethyl acetoacetate
2-acetoacetic acid
Conditions | Yield |
---|---|
In ethanol; benzene | 43% |
Conditions | Yield |
---|---|
beim Abbau durch Leberschnitte; |
acetonedicarboxylic acid
A
2-acetoacetic acid
B
methylammonium carbonate
C
acetone
Conditions | Yield |
---|---|
at 42℃; Rate constant; durch H+ sowie durch Kupfer(2+) und andere Metall-Ionen in wss. Loesung katalysierte Zersetzung; | |
at 22 - 45℃; Rate constant; durch Eisen(3+) katalysierte Zersetzung in wss. Loesung; | |
at 37 - 50℃; Rate constant; durch Eisen(3+) katalysierte Zersetzung in wss. Loesung; |
Conditions | Yield |
---|---|
in Gegenwart von Nieren- und von Leber-Enzympraeparaten; |
Conditions | Yield |
---|---|
in der Leber von Ratten; |
Conditions | Yield |
---|---|
With ammonium iron (II) sulfate; sulfuric acid; dihydrogen peroxide at 25℃; |
Conditions | Yield |
---|---|
in Gegenwart von Lebergewebe; |
Conditions | Yield |
---|---|
bei der Durchstroemung der ueberlebenden Hundeleber; | |
findet sich im Organismus des Frosches auch nach Entfernung der Leber statt; | |
Einw. von Bac. megatherium; |
Conditions | Yield |
---|---|
im tierischen Organismus und durch tierische Gewebe; |
3-hydroxyhexanoic acid
2-acetoacetic acid
Conditions | Yield |
---|---|
Oxydation in Gegenwart von Kaninchenleber-cyclophorase; |
Conditions | Yield |
---|---|
bei Durchstroemung der isolierten Hundeleber; das Ammoniumsalz reagiert; |
Conditions | Yield |
---|---|
Reaktion des Ammoniumracemats bei Durchstroemung der isolierten Hundeleber; |
Conditions | Yield |
---|---|
bei der Durchblutung der ueberlebenden Leber; |
meso-galactaric acid
2-acetoacetic acid
Conditions | Yield |
---|---|
bei der Durchblutung der isolierten ueberlebenden Leber; |
cyclobutane-1,3-dione
2-acetoacetic acid
Conditions | Yield |
---|---|
With water |
butyric acid ; calcium butyrate
A
2-acetoacetic acid
B
succinic acid
C
acetone
D
3-Hydroxybutyric acid
Conditions | Yield |
---|---|
at 28℃; bei der Vergaerung durch Aspergillus niger; | |
at 32℃; bei der Vergaerung durch Aspergillus niger; |
Conditions | Yield |
---|---|
im Blut geloest, bei Durchstroemung der isolierten Hundeleber; |
(2E)-but-2-enedioic acid
3-Hydroxybutyric acid
A
2-acetoacetic acid
B
succinic acid
Conditions | Yield |
---|---|
in Gegenwart des Muskelenzym-Praeparats und von Coenzym I; |
3-Hydroxybutyric acid
2-acetoacetic acid
Conditions | Yield |
---|---|
die aerobe Oxydation von Cystein wirkt induzierend auf die Oxydation; Milchperoxydase beschleunigt diese Reaktion; inactive β-oxy-butyric acid; | |
With 2,2,6,6-tetramethyl-piperidine-N-oxyl; sodium hydrogencarbonate; sodium carbonate at 20℃; Electrochemical reaction; |
Conditions | Yield |
---|---|
in der kuenstlich durchbluteten Hundeleber; |
Conditions | Yield |
---|---|
durch Lebergewebeschnitte; |
Conditions | Yield |
---|---|
durch das 'Cyclophorase-System'; |
3-methyl-5-oxo-hex-2-enoic acid
2-acetoacetic acid
Conditions | Yield |
---|---|
With sodium hydroxide |
Conditions | Yield |
---|---|
With hydrogen; palladium | |
With water |
Conditions | Yield |
---|---|
With hydrogenchloride; water 1.) CCl4, 0-5 deg C, 2.) 0-5 deg C, 3 h; Yield given. Multistep reaction; | |
With water; sodium hydroxide at 25℃; pH=6; Kinetics; Solvent; Temperature; |
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid; iron(II) sulfate 1.) NH3 (liquid), 45 min, 2.) H2O, reflux, 4 h; Yield given. Multistep reaction. Yields of byproduct given; |
cycl-isopropylidene malonate
2-acetoacetic acid
2,2-dimethyl-5-(3-oxobutanoyl)-1,3-dioxane-4,6-dione
Conditions | Yield |
---|---|
With dmap; triethylamine; dicyclohexyl-carbodiimide In dichloromethane for 6h; Ambient temperature; | 99% |
2-acetoacetic acid
Conditions | Yield |
---|---|
With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; | 99% |
2-acetoacetic acid
Conditions | Yield |
---|---|
With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; | 99% |
2-acetoacetic acid
6-chloro-1-[(4-methoxyphenyl)methyl]-4-(trifluoromethyl)hydroquinazolin-2-one
(R)-6-chloro-1-(4-methoxybenzyl)-4-(2-oxopropyl)-4-(trifluoromethyl)-3,4-dihydroquinazolin-2(1H)-one
Conditions | Yield |
---|---|
With C25H39N3O9S In tetrahydrofuran at -20℃; Schlenk technique; enantioselective reaction; | 98% |
2-acetoacetic acid
(RS,E)-(-)-N-(3-phenylpropyl)idene-tert-butanesulfinamide
Conditions | Yield |
---|---|
Stage #1: 2-acetoacetic acid With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; Mannich Aminomethylation; Stage #2: (RS,E)-(-)-N-(3-phenylpropyl)idene-tert-butanesulfinamide In tetrahydrofuran; methanol at 23℃; for 1h; Mannich Aminomethylation; diastereoselective reaction; | 98% |
2-acetoacetic acid
Conditions | Yield |
---|---|
Stage #1: 2-acetoacetic acid With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; Mannich Aminomethylation; Stage #2: 2-Methyl-propane-2-sulfinic acid (R)-non-(E)-ylideneamide In tetrahydrofuran; methanol at 23℃; for 1h; Mannich Aminomethylation; diastereoselective reaction; | 98% |
2-acetoacetic acid
(R,E)-2-methyl-N-(3-methylbutylidene)-2-propanesulfinamide
Conditions | Yield |
---|---|
Stage #1: 2-acetoacetic acid With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; Mannich Aminomethylation; Stage #2: (R,E)-2-methyl-N-(3-methylbutylidene)-2-propanesulfinamide In tetrahydrofuran; methanol at 23℃; for 1h; Mannich Aminomethylation; diastereoselective reaction; | 98% |
Conditions | Yield |
---|---|
Stage #1: 2-acetoacetic acid With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; Mannich Aminomethylation; Stage #2: C9H18BrNOS In tetrahydrofuran; methanol at 23℃; for 1h; Mannich Aminomethylation; diastereoselective reaction; | 98% |
2-acetoacetic acid
(R)-(-)-N-[(1E)-(4-bromophenyl)methylene]-2-methyl-2-propanesulfinamide
Conditions | Yield |
---|---|
Stage #1: 2-acetoacetic acid With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; Mannich Aminomethylation; Stage #2: (R)-(-)-N-[(1E)-(4-bromophenyl)methylene]-2-methyl-2-propanesulfinamide In tetrahydrofuran; methanol at 23℃; for 5h; Mannich Aminomethylation; diastereoselective reaction; | 98% |
2-acetoacetic acid
(R)-N-(tert-butanesulfinyl)-N-(3-phenylpropyliden)amine
Conditions | Yield |
---|---|
With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; | 98% |
Conditions | Yield |
---|---|
With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; | 98% |
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane at 0 - 20℃; for 5h; Inert atmosphere; | 94% |
2-acetoacetic acid
benzyl 4-(hydroxymethyl)piperidine-N-carboxylate
C18H23NO5
Conditions | Yield |
---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 25℃; for 12h; | 93% |
(R)-N-benzylidene-2-methylpropane-2-sulfinamide
2-acetoacetic acid
Conditions | Yield |
---|---|
With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; | 92% |
2-acetoacetic acid
ethyl 5-methylbenzo[d]isothiazole-3-carboxylate 1,1-dioxide
Conditions | Yield |
---|---|
With C25H35N2O3P; diethyl allene-1,3-dicarboxylate In diethyl ether at -30℃; for 36h; enantioselective reaction; | 92% |
2-acetoacetic acid
indole-2,3-dione
3-hydroxy-3-(2-oxopropyl)indolin-2-one
Conditions | Yield |
---|---|
In ethyl acetate at 20℃; for 2h; Aldol Addition; Molecular sieve; Sealed tube; | 91% |
2-acetoacetic acid
2-(1-allyl-2-oxoindolin-3-ylidene)malononitrile
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In neat (no solvent) for 0.333333h; Michael Addition; Milling; Green chemistry; | 91% |
Conditions | Yield |
---|---|
In water at 20℃; for 12h; | 91% |
Conditions | Yield |
---|---|
ytterbium(III) perfluorooctanesulfonate In toluene at 80℃; for 12h; Knoevenagel condensation; | 90% |
2-acetoacetic acid
(E)-1,3-diphenyl-2-propen-1-ol
(+)-(R)-1,3-diphenyl-1-hexen-5-one
Conditions | Yield |
---|---|
With iodine In nitromethane at 20℃; for 2h; Schlenk technique; | 90% |
Conditions | Yield |
---|---|
With silicon-supported ionic liquid catalyst In ethanol at 20 - 30℃; for 0.166667h; | 90% |
Conditions | Yield |
---|---|
With silicon-supported ionic liquid catalyst In ethanol at 20 - 30℃; for 0.5h; | 90% |
2-acetoacetic acid
1-methyl-4-(trifluoromethyl)-1H-pyrimidin-2-one
3-methyl-4-(2-oxopropyl)-6-(trifluoromethyl)-1,2,3,4-tetrahydropyrimidin-2-one
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran at 20℃; for 14h; regioselective reaction; | 90% |
(RS)-N-ethylidene-tert-butanesulfinamide
2-acetoacetic acid
Conditions | Yield |
---|---|
With lithium hydroxide In tetrahydrofuran; methanol at 0 - 23℃; | 90% |
2-acetoacetic acid
2-(1-Methyl-2-oxo-1,2-dihydro-indol-3-ylidene)-malononitrile
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In neat (no solvent) for 0.333333h; Michael Addition; Milling; Green chemistry; | 89% |
2-acetoacetic acid
2-(1-benzyl-2-oxo-1,2-dihydro-indol-3-ylidene)malononitrile
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In neat (no solvent) for 0.416667h; Michael Addition; Milling; Green chemistry; | 89% |
2-acetoacetic acid
benzaldehyde
urea
1,2,3,4-tetrahydro-6-methyl-2-oxo-4-phenylpyrimidine-5-carboxylic acid
Conditions | Yield |
---|---|
With silicon-supported ionic liquid catalyst In ethanol at 20 - 30℃; for 0.333333h; | 89% |
Conditions | Yield |
---|---|
With 1,1'-bis-(diphenylphosphino)ferrocene; chloro(1,5-cyclooctadiene)rhodium(I) dimer In 1,2-dichloro-ethane at 20℃; for 5h; Schlenk technique; Inert atmosphere; regioselective reaction; | 88% |
2-acetoacetic acid
2-<3,4-bis(benzyloxy)phenyl>ethanol
Conditions | Yield |
---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 1h; | 88% |
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