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:4970-53-0
Min.Order:1 Kilogram
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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
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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
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
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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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inquiryWe Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O
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inquiryStock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
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inquiryHunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L to 8000L. With complete auxiliary equipment as
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inquiryETHYL 5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLATEAppearance:detailed see specifications Storage:Keep away of light, cool place Package:25kg/drum;200kg/drum Application:Used in Synthesis, Pharmaceuticals and other fields Transportation:Sea/air/courier
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inquiryOur company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present
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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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inquiry5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTERAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:pharmaceutical intermediate Transportation:by air, by sea, by express
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Type:Other
inquiryStock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
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inquirybulk?production Application:Pharmaceutical intermediates
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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
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inquiry1.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:4970-53-0
Min.Order:10 Milligram
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Type:Lab/Research institutions
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
Cas:4970-53-0
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryPrice, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right
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inquiryYinghao Pharm products include: leader molecule, heterocyclic compounds,chiral compounds, photoelectric materials, biochemical reagents etc. For example:benzene, pyrimidine, boricacid,pyridine, pyrazole, imidazole, pyrrole, fluorine and other derivat
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inquiryfactory,reasonable price Appearance:detailed see specifications Storage:Store in dry, dark and ventilated place. Package:according to the clients requirement Application:pharmaceutical intermediates Transportation:by courier,air or sea Port:S
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inquiryBest quality & Attractive price & Professional service; Trial & Pilot & CommercialHenan Fine Chemicals Co., LTD. is a diversified technology - oriented integrated company, which mainly concentrates on fine chemicals. Our company is committed to becom
Cas:4970-53-0
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inquiry1. 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
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inquiryHigh Quality Best Price Storage:Store in dry, dark and ventilated place Application:Chemical Synthesis Intermediate
High quality Products with prompt delivery Package:based on customer requirement Application:organic intermediates Transportation:By air or By sea Port:any port or China
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inquiryhigh purity Application:Drug intermediates Materials intermediates and active molecules
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inquiry5-Amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Cas:4970-53-0
Min.Order:0
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Type:Trading Company
inquirybromocyane
oxalic acid diethyl ester
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: oxalic acid diethyl ester With hydrazine hydrate In ethanol at -20℃; for 0.5h; Stage #2: bromocyane In ethanol; water at 20℃; for 1h; | 31% |
ethyl 2-(2-carbamoylhydrazono)acetate
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: bromine; acetic acid; sodium acetate / 24 h / 20 °C 2: triethylamine / toluene / 0.17 h / 20 - 80 °C View Scheme | |
Multi-step reaction with 2 steps 1: bromine; sodium acetate; acetic acid / 24 h / 20 °C 2: triethylamine / toluene / 0.17 h / 20 - 80 °C View Scheme | |
Multi-step reaction with 2 steps 1: sodium acetate; bromine / acetic acid / 24 h / 20 °C 2: triethylamine / toluene / 0.17 h / 80 °C View Scheme |
ethyl 2-bromo-2-(2-carbamoylhydrazono)acetate
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With triethylamine In toluene at 20 - 80℃; for 0.166667h; | 1.04 g |
With triethylamine In toluene at 20 - 80℃; for 0.166667h; | 1.04 g |
With triethylamine In toluene at 80℃; for 0.166667h; | 1.04 g |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
5-amino-1,3,4-oxadiazole-2-carboxylic acid amide
Conditions | Yield |
---|---|
With ammonia In methanol at 20℃; for 18h; Concentration; Temperature; Solvent; Sealed tube; | 99% |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; triethylamine In ethyl acetate at 80℃; for 12h; | 98% |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With water; sodium hydroxide for 1h; | 82% |
2,4-dichloro-2-methylpyrimidine
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Catalytic behavior; Reagent/catalyst; Solvent; Temperature; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 71% |
Conditions | Yield |
---|---|
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 25℃; for 18h; | 70% |
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride at 25℃; for 18h; | 70% |
4-chloro-2-methyl-6-phenyl-pyrimidine
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 70% |
di-tert-butyl dicarbonate
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
ethyl 5-[[(tert-butoxy)carbonyl]amino]-1,3,4-oxadiazole-2-carboxylate
Conditions | Yield |
---|---|
With dmap; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 40℃; | 67% |
Stage #1: 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With sodium hydride In N,N-dimethyl-formamide at 0℃; for 0.166667h; Stage #2: di-tert-butyl dicarbonate In N,N-dimethyl-formamide at 20℃; for 16h; | 56.2% |
With triethylamine In N,N-dimethyl-formamide at 20℃; for 12h; | 55% |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 66% |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 61% |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 55% |
With xantphos; palladium diacetate; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 55% |
Conditions | Yield |
---|---|
Stage #1: 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With sodium hydroxide In N,N-dimethyl-formamide for 0.166667h; Stage #2: In N,N-dimethyl-formamide for 0.333333h; Stage #3: methyl iodide In N,N-dimethyl-formamide at 0 - 20℃; for 0.5h; | 37% |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 36% |
With xantphos; palladium diacetate; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 36% |
2-(4-(6-chloro-2-methylpyrimidin-4-yl)piperazin-1-yl)ethanol
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 20% |
With xantphos; palladium diacetate; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere; | 20% |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: 4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzoic acid; 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In dichloromethane; N,N-dimethyl-formamide at 20℃; for 1h; Stage #2: With dmap; trimethylamine In dichloromethane; N,N-dimethyl-formamide at 20℃; | 9% |
N,N-dimethylformamide diethyl diacetal
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
5-(dimethylamino-methyleneamino)-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
In ethanol |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
ethyl 5-bromo-1,3,4-oxadiazole-2-carboxylate
Conditions | Yield |
---|---|
Stage #1: 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With copper(ll) bromide In acetonitrile at 20℃; for 0.25h; Stage #2: With tert.-butylnitrite In acetonitrile at 20 - 50℃; for 2.5h; |
ethylmagnesium bromide
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
3-(5-amino-1,3,4-oxadiazol-2-yl)pentan-3-ol
Conditions | Yield |
---|---|
In tetrahydrofuran at 0 - 20℃; for 0.5h; Mechanism; |
cyclopropylmagnesium bromide
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: cyclopropylmagnesium bromide; 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester In tetrahydrofuran at -78 - 20℃; Stage #2: With ammonium chloride In tetrahydrofuran; water |
Conditions | Yield |
---|---|
Stage #1: ethylmagnesium bromide; 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester In tetrahydrofuran at -78 - 20℃; Stage #2: With ammonium acetate In tetrahydrofuran; water |
cinchophen
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
N-(5-ethoxycarbonyl-1,3,4-oxadiazol-2-yl)-2-phenyl-4-quinolinecarboxamide
Conditions | Yield |
---|---|
With 1-hydroxy-7-aza-benzotriazole; N-ethyl-N,N-diisopropylamine; HATU In N,N-dimethyl-formamide |
2-phenylquinoline-4-carbonyl chloride
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
N-(5-ethoxycarbonyl-1,3,4-oxadiazol-2-yl)-2-phenyl-4-quinolinecarboxamide
Conditions | Yield |
---|---|
With pyridine at 20 - 60℃; |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Ethyl 5-({[(3S)-2-((2R)-3-cyclopentyl-2-{[formyl(hydroxy)amino]methyl}propanoyl)-3-pyrazolidinyl]carbonyl}amino)-1,3,4-oxadiazole-2-carboxylate
Conditions | Yield |
---|---|
With sodium hydroxide In water for 0.0833333h; | 0.02 g |
With water; sodium hydroxide at 20℃; for 0.0833333h; | 0.02 g |
With sodium hydroxide In water at 20℃; for 0.0833333h; | 0.02 g |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With palladium diacetate; caesium carbonate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene In 1,4-dioxane at 100℃; for 16h; Inert atmosphere; |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: sodium hydroxide / N,N-dimethyl-formamide / 0.17 h 1.2: 0.33 h 1.3: 0.5 h / 0 - 20 °C 2.1: N,N-dimethyl-formamide / 16 h / 120 °C View Scheme |
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: 4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzoic acid; 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In dichloromethane; N,N-dimethyl-formamide at 20℃; for 1h; Sealed tube; Stage #2: With dmap; triethylamine In dichloromethane; N,N-dimethyl-formamide at 20℃; Sealed tube; Overall yield = 9%; Overall yield = 19 mg; | A n/a B n/a |
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