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
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inquiryThe 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
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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 on.O
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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
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inquiry1.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
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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
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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
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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
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inquiryZhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed
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Min.Order:1 Kilogram
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inquiryShanghai Massive Chemical Technology Co., Ltd. is engaged in development, production and marketing Specialty Chemicals to satisfy the changing needs of the chemical industry. We specialize in manufacturing high quality of Advanced Intermediates, Sp
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Min.Order:1 Gram
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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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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
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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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inquiryButanedioic acid,2-methyl-3-oxo-, 1,4-diethyl ester cas 759-65-9Appearance: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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inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
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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inquiryTech Data Relevant 1.Certificate Of Analysis (COA) 2..Material Safety Data Sheet (MSDS) 3.Technical Data Sheet(TDS) 4.Route of synthesis (ROS) 5.Nuclear Magnetic Resonance(NMR) 6.Method of Analysis(MOA) Our Service 1. Before Shipmen
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Min.Order:100 Kilogram
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inquiryChangzhou Extraordinary Pharmatech co., LTD. As a leading chemical manufacturer and supplier in China.DAS authentication is passed.We can provide the popular precursor chemicals, we have our own strong R & D team, have our own laboratories and fa
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Min.Order:1 Gram
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Min.Order:1 Kilogram
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inquiryCompound sourcing ServicesAgency of testing serviceFactory audit serviceFounded in Dec. 1999, Nanjing Chemlin Chemical Industrial Co.,Ltd(CHEMLIN) has been covering the business scope from trading of chemicals to custom-synthesis & Manufacturing. Co
Shanghai AngewChemCo., Ltd. is an innovative enterprise on fine chemicals and pharmaceuticals. Based on Shanghai R&D center and Hunan chemical manufacturing plant, we offer chemical research, process development, and large-scale production. Complete
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inquiryConditions | Yield |
---|---|
With sodium ethanolate In ethanol at 20℃; Inert atmosphere; | 67% |
With sodium ethanolate In ethanol at 20℃; Inert atmosphere; | 67% |
diethyl ether
potassium ethoxide
Ethyl propionate
oxalic acid diethyl ester
diethyl oxalpropionate
diethyl ether
sodium ethanolate
Ethyl propionate
oxalic acid diethyl ester
diethyl oxalpropionate
Conditions | Yield |
---|---|
at 100℃; |
1-cyano-but-1-ene-1,2,3-tricarboxylic acid triethyl ester
ozone
A
2-oxocyanoacetic acid ethyl ester
B
diethyl oxalpropionate
C
ethyl acetate
ozone
ethyl acetate
A
2-oxo-propionic acid ethyl ester
B
diethyl oxalpropionate
Conditions | Yield |
---|---|
damit enthaelt geringe Mengen γ-Methyl-α-cyan-aconitsaeure-triaethylester gibt Methyloxalessigsaeure-diaethylester; |
diethyl oxalpropionate
ethyl 4-methyl-5-oxo-2,5-dihydroisoxazole-3-carboxylate
Conditions | Yield |
---|---|
With hydroxylamine hydrochloride In ethanol at 78℃; for 14h; Inert atmosphere; | 100% |
With hydroxylamine hydrochloride In ethanol for 12h; Reflux; | 74.3% |
4-penten-3-one
diethyl oxalpropionate
diethyl 2-methyl-3-oxo-2-(3-oxopentyl)succinate
Conditions | Yield |
---|---|
Stage #1: diethyl oxalpropionate at 20℃; Electrolysis; Stage #2: 4-penten-3-one at 20℃; for 1h; Michael addition; | 96% |
With triethylamine In ethanol; benzene |
Conditions | Yield |
---|---|
With bismuth(III) chloride at 100℃; for 3h; Green chemistry; | 96% |
diethyl oxalpropionate
aniline
(Z)-2-Methyl-3-phenylamino-but-2-enedioic acid diethyl ester
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In benzene for 48h; Heating; | 87% |
diethyl oxalpropionate
methyl iodide
diethyl 3,3-dimethyl-2-ketosuccinate
Conditions | Yield |
---|---|
With 18-crown-6 ether; potassium tert-butylate In toluene at 20℃; | 85% |
diethyl oxalpropionate
1,2-diamino-benzene
ethyl 2-(3,4-dihydro-3-oxo-2-quinoxalinyl)propanoate
Conditions | Yield |
---|---|
In ethanol for 0.25h; Heating; | 84% |
diethyl oxalpropionate
4-Bromo-5-(N-methyl-hydrazino)-2-phenyl-2H-pyridazin-3-one
1,4-Dimethyl-5-oxo-6-phenyl-1,4,5,6-tetrahydro-pyridazino[4,5-c]pyridazine-3,4-dicarboxylic acid diethyl ester
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide Ambient temperature; | 84% |
Conditions | Yield |
---|---|
With acetic acid In ethanol for 48h; Reflux; | 84% |
diethyl oxalpropionate
2,4-dihydro-5-hydroxy-2-phenyl-3H-pyrazol-3-one
Conditions | Yield |
---|---|
at 150℃; for 2h; | 80% |
diethyl oxalpropionate
sodium glyoxylate
2-Methylfumaric acid (1-ethyl ester)
Conditions | Yield |
---|---|
With sodium hydroxide In water at 0℃; for 0.166667h; | 77% |
Conditions | Yield |
---|---|
With acetic acid at 20 - 50℃; | 77% |
diethyl oxalpropionate
1-amino-2-iminonaphtho<1,2-d>thiazole
diethyl (E,Z)-2-(2-imino-3-naphtho<1,2-d>thiazolylimino)-3-methylsuccinate
Conditions | Yield |
---|---|
In ethanol for 24h; Heating; | 76% |
ethanol
diethyl oxalpropionate
2,2-diethoxyethaneimidamide sodium chloride
ethyl 2-diethoxymethyl-6-hydroxy-5-methylpyrimidine-4-carboxylate
Conditions | Yield |
---|---|
With triethylamine In ethanol for 2h; Heating; | 76% |
chloro-trimethyl-silane
diethyl oxalpropionate
(E)-2-Methyl-3-trimethylsilanyloxy-but-2-enedioic acid diethyl ester
Conditions | Yield |
---|---|
In tetrahydrofuran; triethylamine | 74% |
1-benzylimidazole
N,N-diisopropylcarbamoyl chloride
diethyl oxalpropionate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In acetonitrile at 20℃; for 68h; | 73% |
diethyl oxalpropionate
4-Bromo-5-(N-methyl-hydrazino)-2H-pyridazin-3-one
1,4-Dimethyl-5-oxo-1,4,5,6-tetrahydro-pyridazino[4,5-c]pyridazine-3,4-dicarboxylic acid diethyl ester
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide Ambient temperature; | 72% |
diethyl oxalpropionate
2-Benzyl-4-bromo-5-(N-methyl-hydrazino)-2H-pyridazin-3-one
6-Benzyl-1,4-dimethyl-5-oxo-1,4,5,6-tetrahydro-pyridazino[4,5-c]pyridazine-3,4-dicarboxylic acid diethyl ester
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide Ambient temperature; | 72% |
Conditions | Yield |
---|---|
Stage #1: diethyl oxalpropionate; 2-bromoaniline With acetic acid In benzene for 96h; Reflux; Stage #2: With diphenylether for 4h; Reflux; Further stages; | 71.5% |
diethyl oxalpropionate
Chloroacetamide
ethyl 2-chloroacetylamino-3-ethoxycarbonyl-2-butenoate
Conditions | Yield |
---|---|
With sulfuric acid; trichlorophosphate In benzene | 71% |
diethyl oxalpropionate
4-methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With hydrazine hydrate In ethanol for 0.5h; Heating; | 70% |
Conditions | Yield |
---|---|
In ethanol Ambient temperature; | 70% |
diethyl oxalpropionate
aniline
diethyl 2‐methyl-3‐(phenylimino)succinate
Conditions | Yield |
---|---|
With magnesium sulfate | 69% |
With acetic acid In toluene Reflux; Dean-Stark; | 67% |
With toluene-4-sulfonic acid In toluene Heating; | |
In dichloromethane Heating / reflux; | |
With toluene-4-sulfonic acid In cyclohexane at 120℃; for 48h; Inert atmosphere; |
Conditions | Yield |
---|---|
In acetic acid at 50℃; for 24h; Reflux; Inert atmosphere; | 68% |
With acetic acid at 50℃; for 24h; | 61% |
diethyl oxalpropionate
2-amino-4,5-difluoroaniline
Conditions | Yield |
---|---|
In ethanol for 2h; Condensation; Heating; | 68% |
diethyl oxalpropionate
Conditions | Yield |
---|---|
With hydrazine hydrate at 55 - 67℃; for 24h; | 66% |
N,N-diethylhydrazine
diethyl oxalpropionate
2-(Diethyl-hydrazono)-3-methyl-succinic acid diethyl ester
Conditions | Yield |
---|---|
In ethanol for 24h; Ambient temperature; | 65% |
methanol
diethyl oxalpropionate
diguanidine carbonate
methyl-2-amino-6-hydroxy-5-methyl-pyrimidine-4-carboxylate
Conditions | Yield |
---|---|
Stage #1: diethyl oxalpropionate; diguanidine carbonate With sodium hydroxide In water at 100℃; for 18h; Stage #2: methanol With sulfuric acid for 12h; Reflux; Stage #3: With ammonia In water at 20℃; | 65% |
diethyl oxalpropionate
aniline
ethyl 3-methyl-4-oxo-1,4‐dihydroquinoline‐2‐carboxylate
Conditions | Yield |
---|---|
Stage #1: diethyl oxalpropionate; aniline With acetic acid In benzene Heating / reflux; Stage #2: In diphenylether at 250℃; for 0.5h; | 63% |
diethyl oxalpropionate
5,5-dimethyl-6-hydrazino-4,5-dihydro-2H-pyridazin-3-one
Conditions | Yield |
---|---|
In ethanol at 20℃; for 72h; | 62% |
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