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
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
Shanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu
Cas:57-57-8
Min.Order:1 Kilogram
FOB Price: $1.0
Type:Manufacturers
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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inquiry2-Oxetanone Basic information Product Name: 2-Oxetanone Synonyms: BETA-HYDROXYPROPIONIC ACID LACTONE;BETA-PROPIOLACTONE;BETA-PROPIONOLACTONE;B-PROPIOLACTONE;HYDRACRYLIC ACID BETA-LAC
With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin
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Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after the dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available &diam
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Min.Order:1 Kilogram
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Type:Lab/Research institutions
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Cas:57-57-8
Min.Order:1 Milliliter
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Type:Trading Company
inquiry2-Oxetanone CAS:57-57-8 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 intermediates, s
Cas:57-57-8
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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
Henan 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
Hangzhou 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
Company Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
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
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
High quality, competitive price, fast delivery and first-class service we possesses have won the trust and praise of customers. Standard: BP/USP/EP The purity is equal or greater than 99%. As a supplier, we can provide high-quality products. Cle
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Type:Lab/Research institutions
inquiryfactory?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
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Type:Trading Company
inquiryHangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu
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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
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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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
high 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
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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
Conditions | Yield |
---|---|
With tetrachloromethane; bis(acetylacetonate)oxovanadium at 100℃; for 1h; | 98% |
With [RuCl2(PPh3)2(2-PyCH21,3,5-triaza-7-phosphadamantane)].Br; potassium hydroxide In water for 48h; Reagent/catalyst; Schlenk technique; Reflux; Inert atmosphere; Green chemistry; | 95% |
Conditions | Yield |
---|---|
With oxygen; benzaldehyde; nickel(II) iodide; Dowex 50W; iron(II) In 1,2-dichloro-ethane at 20℃; for 15h; Baeyer-Villiger oxidation; | 94% |
Conditions | Yield |
---|---|
Hexamethylbenzene; [(C1TPP)Al][Co(CO)4] In tetrahydrofuran at -78 - 60℃; under 10343.2 Torr; for 3h; Product distribution / selectivity; Molecular sieve; Inert atmosphere; | A 92% B 5% |
[(C1TPP)Al][Co(CO)4] In sulfolane at -78 - 80℃; under 31029.7 Torr; Product distribution / selectivity; Inert atmosphere; | A 46.8% B 7.9% |
With Hexamethylbenzene; [(tetra(4-chlorophenyl)porphyrinato)aluminium(III)][tetracarbonylcobaltate] In tetrahydrofuran at 60℃; under 10343.2 Torr; for 3h; Catalytic behavior; Pressure; Reagent/catalyst; Solvent; Temperature; Glovebox; Inert atmosphere; | A 92 %Spectr. B 5 %Spectr. |
Conditions | Yield |
---|---|
With P(MeNCH2CH2)3N In acetonitrile at 25℃; for 0.0833333h; | 90% |
oxirane
carbon monoxide
A
succinic acid anhydride
B
β-Propiolactone
Conditions | Yield |
---|---|
Hexamethylbenzene; [(C1TPP)Al][Co(CO)4] In tetrahydrofuran at -78 - 60℃; under 31029.7 Torr; for 3h; Product distribution / selectivity; Molecular sieve; Inert atmosphere; | A 8% B 88% |
Hexamethylbenzene; [(C1TPP)Al][Co(CO)4] In tetrahydrofuran at -78 - 60℃; under 31029.7 Torr; for 3h; Product distribution / selectivity; Molecular sieve; Inert atmosphere; | A 13% B 81% |
With Hexamethylbenzene; [(tetra(4-chlorophenyl)porphyrinato)aluminium(III)][tetracarbonylcobaltate] In tetrahydrofuran at 60℃; under 31029.7 Torr; for 3h; Glovebox; Inert atmosphere; | A 8 %Spectr. B 88 %Spectr. |
Conditions | Yield |
---|---|
With aluminium trichloride; zinc(II) chloride In acetone | 75% |
With acetone; zinc(II) chloride | |
With β-Propiolactone |
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate; [bis(triphenylphospine)nitrogen(1+)][Co(CO)4] In N,N-dimethyl-formamide at 80℃; under 46544.6 Torr; for 24h; | 44% |
Hexamethylbenzene; [(C1TPP)Al][Co(CO)4] In tetrahydrofuran at -78 - 30℃; under 31029.7 Torr; for 3h; Product distribution / selectivity; Molecular sieve; Inert atmosphere; | 44% |
With trimethylaluminum; dicobalt octacarbonyl In diethylene glycol dimethyl ether; toluene at 75℃; under 45004.5 Torr; for 5h; |
Conditions | Yield |
---|---|
in Gegenwart verschiedener Katalysatoren; |
β-Propiolactone
Conditions | Yield |
---|---|
With base In water; dimethyl sulfoxide at 34℃; | |
In water; dimethyl sulfoxide at 34℃; Rate constant; Mechanism; |
β-Propiolactone
Conditions | Yield |
---|---|
With silver nitrate |
Conditions | Yield |
---|---|
in Gegenwart verschiedener Katalysatoren; |
Ketene
formaldehyd
aluminium trichloride
diethyl ether
β-Propiolactone
Conditions | Yield |
---|---|
With sodium dihydrogenphosphate; sodium perchlorate; sodium nitrite at 24.84℃; pH=3.00; Kinetics; |
L-glutamic acid
A
maleiimide
B
Succinimide
C
pyrrole
D
β-Propiolactone
E
3-Methylpyridine
F
ethanol
G
acetic acid
H
acrylonitrile
I
7-deazahypoxanthine
J
acetonitrile
K
propiononitrile
Conditions | Yield |
---|---|
With oxygen at 400℃; under 760.051 Torr; for 5.55556E-05h; Temperature; Inert atmosphere; Pyrolysis; Gas phase; Flow reactor; |
oxirane
carbon monoxide
A
succinic acid anhydride
B
β-Propiolactone
C
acetaldehyde
Conditions | Yield |
---|---|
With [(tetra(4-chlorophenyl)porphyrinato)aluminium(III)bis(tetrahydrofuran)][tetracarbonylcobaltate] at 80℃; under 31029.7 Torr; for 4h; Catalytic behavior; Glovebox; Inert atmosphere; | A 50.8 %Spectr. B 23.6 %Spectr. C 5.5 %Spectr. |
Conditions | Yield |
---|---|
With sodium methylate at 50℃; for 1h; | 100% |
With sulfuric acid at 0℃; for 18h; | 97% |
With sodium methylate In methanol at 50℃; for 1.5h; | 90% |
Conditions | Yield |
---|---|
With sulfuric acid at 20℃; for 4h; | 100% |
With sulfuric acid at 20℃; for 4h; | 98.2% |
With sulfuric acid for 2h; Ambient temperature; | 60% |
With sulfuric acid |
Conditions | Yield |
---|---|
With ammonia In water at 0 - 20℃; | 100% |
With ammonia at 100℃; unter Druck; | |
With ammonia; water | |
With ammonia In methanol at 20℃; | |
With ammonia In tetrahydrofuran at -78 - 3℃; for 2.58h; Sealed tube; regioselective reaction; | 66 %Spectr. |
Conditions | Yield |
---|---|
In methanol at 50℃; for 4h; | 100% |
In methanol at 50℃; for 1h; | 69% |
In methanol at 50℃; for 1h; Inert atmosphere; | 39% |
Conditions | Yield |
---|---|
With bis(trifluoromethane)sulfonimide lithium In chloroform at 85℃; for 40h; | 100% |
Conditions | Yield |
---|---|
With water; sodium hydroxide at 20℃; Inert atmosphere; | 100% |
With sodium hydroxide In water at 20℃; | |
Stage #1: β-Propiolactone With water Stage #2: With sodium hydroxide pH=9.33; | |
With water; sodium hydroxide at 20℃; Inert atmosphere; | 1 g |
Conditions | Yield |
---|---|
With copper(l) iodide; dimethylsulfide In tetrahydrofuran at 0℃; for 3h; | 99% |
β-Propiolactone
propionic acid
Conditions | Yield |
---|---|
With palladium 10% on activated carbon; W(OTf)6; hydrogen at 135℃; under 760.051 Torr; for 12h; | 99% |
With palladium on activated carbon; W(OTf)6; hydrogen In neat (no solvent) at 135℃; under 760.051 Torr; for 12h; Reagent/catalyst; | 90 %Chromat. |
Conditions | Yield |
---|---|
With bis(trichloromethyl) carbonate; N,N-dimethylpiperidine-4-carboxamide hydrochloride at 25℃; for 10h; Reagent/catalyst; Large scale; | 98% |
With phosphorus pentachloride In benzene at 20℃; for 10h; Chlorination; | 87% |
With tetrachloromethane; sulfuryl dichloride | |
With tetrachloromethane; phosphorus pentachloride | |
With thionyl chloride |
Conditions | Yield |
---|---|
In tetrahydrofuran at 20℃; for 0.25h; | 96% |
Conditions | Yield |
---|---|
With copper(l) chloride In tetrahydrofuran at -10℃; | 95% |
With copper(I) bromide at -5℃; for 1h; Mechanism; Product distribution; other solvents, Grignard reagents, catalyst and temperature; |
β-Propiolactone
Conditions | Yield |
---|---|
In water at 20℃; for 1h; | 95% |
β-Propiolactone
3-(2-methoxy-2-oxoethylsulfanyl)-propanoic acid
Conditions | Yield |
---|---|
94% |
(E)-N-(naphthalen-1-yl)-1-phenylmethanimine
β-Propiolactone
Conditions | Yield |
---|---|
nickel(II) iodide; samarium diiodide In tetrahydrofuran for 1h; Addition; | 93% |
dimethyl(2,2'-bipyridine)platinum(II)
β-Propiolactone
Conditions | Yield |
---|---|
In acetone React. at room temp. for 4 h.; Elem. anal.; | 93% |
In dichloromethane Kinetics; React. at 25°C.; Rate consts. given.; | |
In isopropyl alcohol Kinetics; React. at 25°C.; Rate consts. given.; |
Conditions | Yield |
---|---|
With formic acid at 20℃; for 2h; Inert atmosphere; | 93% |
Conditions | Yield |
---|---|
With copper(l) iodide In tetrahydrofuran at -30 - 0℃; for 0.0333333h; Product distribution; Mechanism; further reagents, solvents, temperatures, times, further β-propiolactones and Grignard reagents; | 92% |
copper(l) chloride In tetrahydrofuran Product distribution; other solvents, catalysts; | 90% |
copper(l) chloride at 0℃; for 0.25h; | 90% |
With copper(l) iodide; dimethylsulfide 1) THF, -30 deg C, 30 min; 2) -30 deg C, 1 h, 0 deg C, 1 h; Yield given. Multistep reaction; |
Conditions | Yield |
---|---|
Stage #1: bromopentene With magnesium In tetrahydrofuran for 2h; Heating; Stage #2: β-Propiolactone With copper(l) chloride In tetrahydrofuran at 20℃; for 1h; | 92% |
Conditions | Yield |
---|---|
at 75℃; for 24h; | 91% |
Conditions | Yield |
---|---|
In tetrahydrofuran at 20℃; for 0.25h; Product distribution; other solvent, addition of 18-crown-6, other substrates; | 90% |
In tetrahydrofuran at 20℃; for 0.25h; | 90% |
Conditions | Yield |
---|---|
dilithium tetrachlorocuprate In tetrahydrofuran at -10℃; for 1h; | 90% |
Conditions | Yield |
---|---|
nickel(II) iodide; samarium diiodide In tetrahydrofuran for 1h; Addition; | 90% |
Conditions | Yield |
---|---|
nickel(II) iodide; samarium diiodide In tetrahydrofuran for 1h; Addition; | 90% |
methanol
β-Propiolactone
sodium methylate
methyl ester (3-hydroxy) propionic acid
Conditions | Yield |
---|---|
at 50℃; for 2h; Inert atmosphere; | 90% |
Stage #1: methanol; β-Propiolactone; sodium methylate at -78℃; Stage #2: With hydrogenchloride; methanol |
β-Propiolactone
4-Fluoro-3-hydroxy-benzoic acid methyl ester
3-(2-carboxy-ethoxy)-4-fluoro-benzoic acid methyl ester
Conditions | Yield |
---|---|
Stage #1: 4-Fluoro-3-hydroxy-benzoic acid methyl ester With potassium tert-butylate In tetrahydrofuran at 0 - 5℃; for 0.166667h; Stage #2: β-Propiolactone In tetrahydrofuran at 0 - 50℃; for 4h; Stage #3: With hydrogenchloride; water pH=0 - 2; | 90% |
Conditions | Yield |
---|---|
In acetonitrile | 89% |
With acetonitrile |
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