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:5780-66-5
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
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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Cas:5780-66-5
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
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Cas:5780-66-5
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
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:5780-66-5
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
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
Cas:5780-66-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryPyrazine-2-carbaldehyde CAS:5780-66-5 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 i
Cas:5780-66-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
Appearance:white or light yellow crystalline powder Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for research and industrial manufacture. Transportation:By
Cas:5780-66-5
Min.Order:0 Metric Ton
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inquiryA substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
Cas:5780-66-5
Min.Order:4 Kilogram
Negotiable
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:5780-66-5
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
inquiryPyrazine-2-carbaldehyde Pyrazine-2-carbaldehyde CAS Number: 5780-66-5 Molecular formula: C5H4N2O Molecular weight: 108.09800 Accurate quality: 108.03200 PSA: 42.85000 LogP: 0.28910 Physical and chemical properties Density:
We are leading fine chemicals supplier in China with ISO certificate, Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...) 2.Organic Phosphine Ligands (Tert-butyl-phosphine.Cyclohexyl-phosphine...) 3.OLED
Cas:5780-66-5
Min.Order:1 Gram
FOB Price: $3.0
Type:Lab/Research institutions
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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Cas:5780-66-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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Shanghai Finebiotech Co.,Ltd.was established in 2020, which providing professional chemical services. As a customer-oriented company, we have distinguished ourself from others in providing worldwide customers with cost-effective and efficient service
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
high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,Pharmaceutical intermediates Transportation:air,sea,courier
Cas:5780-66-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryR & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates
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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Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiryhigh qualityAppearance:white crystalline powder 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
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Our own factory produces direct sales with absolute price advantage Application:Pharmaceutical industry Transportation:By sea Port:Shanghai/tianjin
Cas:5780-66-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry★.Best quality according to requirement ★.Competitive price in China market ★.Mature Technical support ★.Professional logistic support
We 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
Conditions | Yield |
---|---|
Stage #1: methyl pyrazine-2-carboxylate With lithium aluminium tetrahydride In tetrahydrofuran at -78 - 72℃; for 0.333333h; Stage #2: With hydrogenchloride; water | 100% |
With lithium aluminium tetrahydride In tetrahydrofuran at -83℃; for 2h; | 68% |
With lithium aluminium tetrahydride In tetrahydrofuran at -78℃; for 1.83333h; Inert atmosphere; Schlenk technique; | 53.4% |
pyrazinecarboxaldehyde
Conditions | Yield |
---|---|
With hydroxylamine hydrochloride; sodium acetate In ethanol at 50℃; for 2h; Temperature; | 96.8% |
2,5-dimethyl-pyrazine
A
2,5-pyrazine-dicarboxaldehyde
B
5-methyl-2-pyrazinecarboxaldehyde
C
pyrazinecarboxaldehyde
Conditions | Yield |
---|---|
With air; vanadia; molybdenum(VI) oxide In water for 2.77778E-05h; Product distribution; different ratio of V:Mo, different temperature, different time of contact; | A 10% B 21% C n/a |
With air; vanadia; molybdenum(VI) oxide In water at 360℃; for 2.77778E-05h; | A 10% B 21% C n/a |
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; selenium(IV) oxide In 1,4-dioxane for 3h; Heating; | 11% |
Conditions | Yield |
---|---|
With selenium(IV) oxide In 1,4-dioxane Heating; | |
With manganese(IV) oxide In acetone Sonication; | |
With Dess-Martin periodane In dichloromethane at 20℃; for 1h; | 100 mg |
With 2,2'-azinobis(3-ethylbenzthiazolinesulfonate); horse-radish peroxidase; choline oxidase from Arthrobacter cholorphenolicus, mutant S101A/D250G/F253R/V355T/F357R/M359R In aq. phosphate buffer at 30℃; for 24h; pH=8; Catalytic behavior; Reagent/catalyst; Enzymatic reaction; |
Conditions | Yield |
---|---|
β-VO(PO3)2 In gas at 400℃; Product distribution; Rate constant; selectivity of reaction, rates of partial and total oxidation; |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 95 percent / conc. H2SO4 / 48 h / Heating 2: 26 percent / DIBAL / CH2Cl2 View Scheme |
pyrazine carboxaldehyde diethyl acetal
N-methoxylamine hydrochloride
pyrazinecarboxaldehyde
Conditions | Yield |
---|---|
With sodium hydrogencarbonate In chloroform; Petroleum ether |
2-Methylpyrazine
A
2-methylpyrazine 4-oxide
B
2-methylpyrazine 1-oxide
C
2-pyrazylcarboxylic acid
D
pyrazinecarboxaldehyde
E
pyrazine-2-carboxylic acid-4-oxide
F
pyrazine-2-carboxylic acid-1-oxide
Conditions | Yield |
---|---|
With acetyl peroxyborate In water at 94.84℃; for 5h; | A n/a B n/a C 56.3 mol % D 4.5 mol % E n/a F n/a |
With acetyl peroxyborate In water at 94.84℃; for 5h; | A n/a B n/a C 28.5 mol % D 41.2 mol % E n/a F n/a |
2-Methylpyrazine
acetic acid
A
acetate de (pyrazinyl-2) methyle
B
pyrazinecarboxaldehyde
Conditions | Yield |
---|---|
With copper(l) iodide; oxygen; palladium diacetate at 120℃; for 24h; Autoclave; |
ethylenediamine
glycerol
A
1,4-pyrazine
B
2-Methylpyrazine
C
2,5-dimethyl-pyrazine
D
2,3-dimethylpyrazine
E
pyrazinecarboxaldehyde
Conditions | Yield |
---|---|
With calcined ZnO-ZnCr2O4 catalyst In water at 300 - 400℃; under 760.051 Torr; |
ethylenediamine
glycerol
A
1,4-pyrazine
B
2-Methylpyrazine
C
2,5-dimethyl-pyrazine
D
2,3-dimethylpyrazine
E
pyrazin-2-ylmethanol
F
2,6-dimethylpyrazine
G
pyrazinecarboxaldehyde
Conditions | Yield |
---|---|
In water at 375℃; under 760.051 Torr; for 6h; Inert atmosphere; Flow reactor; |
pyrazinecarboxaldehyde
2-aminomethylpyrazine
Conditions | Yield |
---|---|
Stage #1: pyrazinecarboxaldehyde; 2-aminomethylpyrazine In dichloromethane for 0.0833333h; Inert atmosphere; Stage #2: With sodium sulfate In dichloromethane at 20℃; for 0.75h; Inert atmosphere; Darkness; | 100% |
(E)-(2-nitrovinyl)cyclohexane
pyrazinecarboxaldehyde
(S)-2-cyclohexyl-3-nitro-1-(pyrazin-2-yl)propan-1-one
Conditions | Yield |
---|---|
With (5R,7R)-7-fluoro-5-isopropyl-2-(perfluorophenyl)-6,7-dihydro-5H-pyrrolo[2,1c][1,2,4]triazol-2-ium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In methanol at 0℃; Stetter reaction; Inert atmosphere; optical yield given as %ee; enantioselective reaction; | 99% |
Conditions | Yield |
---|---|
With triethylamine at 20℃; for 1h; | 93.3% |
With potassium tert-butylate In tetrahydrofuran at 0 - 5℃; for 0.25h; | 64% |
pyrazinecarboxaldehyde
1-t-Butoxycarbonylpiperazine
tert-butyl 4-(pyrazin-2-ylmethyl)piperazine-1-carboxylate
Conditions | Yield |
---|---|
With sodium triacetoxy borohydride; acetic acid In dichloromethane at 20℃; for 6.5h; | 91% |
pyrazinecarboxaldehyde
2-(difluoromethyl)pyrazine
Conditions | Yield |
---|---|
With XtalFluor-E; triethylamine tris(hydrogen fluoride) In dichloromethane at 20℃; | 90% |
With (diethylamido)sulfur trifluoride In trichlorofluoromethane at 20℃; | 39% |
Conditions | Yield |
---|---|
In methanol at 60℃; for 0.5h; | 90% |
(2-aminomethylpyridine)
pyrazinecarboxaldehyde
(2-picolyl)-(pyrazin-2-yl-methyl)amine
Conditions | Yield |
---|---|
Stage #1: 2-(Aminomethyl)pyridine; pyrazinecarboxaldehyde In methanol at 25℃; for 0.5h; Stage #2: With sodium tetrahydroborate In methanol at 25℃; for 2h; | 90% |
Conditions | Yield |
---|---|
With toluene-4-sulfonamide In toluene at 120℃; for 12h; Inert atmosphere; | 89% |
Conditions | Yield |
---|---|
With toluene-4-sulfonamide In toluene at 120℃; for 12h; Inert atmosphere; | 87% |
Conditions | Yield |
---|---|
In dichloromethane at 20℃; for 16h; | 87% |
2-furanoic acid
tert-butylisonitrile
4-tert-Butylaniline
pyrazinecarboxaldehyde
N-tert-butyl-2-[N-(4-tert-butylphenyl)-1-(furan-2-yl)formamido]-2-(pyrazin-2-yl)acetamide
Conditions | Yield |
---|---|
Stage #1: 4-tert-Butylaniline; pyrazinecarboxaldehyde In methanol at 20℃; for 0.5h; Ugi Condensation; Inert atmosphere; Stage #2: 2-furanoic acid; tert-butylisonitrile In methanol at 20℃; Ugi Condensation; Inert atmosphere; | 86% |
In methanol at 20℃; for 16h; Ugi Condensation; |
Conditions | Yield |
---|---|
With toluene-4-sulfonamide In toluene at 120℃; for 12h; Inert atmosphere; | 85% |
Conditions | Yield |
---|---|
With toluene-4-sulfonamide In toluene at 120℃; for 12h; Inert atmosphere; | 83% |
2-furanoic acid
4-Aminobiphenyl
(S)-1-isocyano-1-phenylethane
pyrazinecarboxaldehyde
Conditions | Yield |
---|---|
Stage #1: 4-phenylalanine; pyrazinecarboxaldehyde In methanol at 20℃; for 0.5h; Ugi Condensation; Inert atmosphere; Stage #2: 2-furanoic acid; (S)-1-isocyano-1-phenylethane In methanol at 20℃; Ugi Condensation; Inert atmosphere; | 83% |
[2-(3-bromo-benzo[b]thiophen-2-yl)-ethyl]dimethyl-amine
pyrazinecarboxaldehyde
trifluoroacetic acid
[2-(2-dimethylamino-ethyl)-benzo[b]thiophen-3-yl]-pyrazin-2-yl-methanol trifluoroacetate
Conditions | Yield |
---|---|
Stage #1: [2-(3-bromo-benzo[b]thiophen-2-yl)-ethyl]dimethyl-amine With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In hexane; toluene at -78℃; Stage #2: pyrazinecarboxaldehyde In hexane; toluene at -78 - 0℃; Stage #3: trifluoroacetic acid In water; acetonitrile | 82% |
Conditions | Yield |
---|---|
With toluene-4-sulfonamide In toluene at 120℃; for 12h; Inert atmosphere; | 82% |
pyrazinecarboxaldehyde
Conditions | Yield |
---|---|
With pyridine; diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate at 100℃; for 4h; Knoevenagel Condensation; | 82% |
Conditions | Yield |
---|---|
With toluene-4-sulfonamide In toluene at 120℃; for 12h; Inert atmosphere; | 80% |
Conditions | Yield |
---|---|
With piperidine; acetic acid In toluene at 110℃; for 18h; Inert atmosphere; Schlenk technique; Sealed tube; | 80% |
Conditions | Yield |
---|---|
Stage #1: allyltriphenylphosphonium bromide In tetrahydrofuran; hexane at 0℃; for 0.25h; Inert atmosphere; Stage #2: pyrazinecarboxaldehyde In tetrahydrofuran; hexane for 1h; Inert atmosphere; | 79% |
Conditions | Yield |
---|---|
With sodium cyanoborohydride; acetic acid at 100℃; for 14h; Flow reactor; | 76% |
4-[3-fluoro-4-(methylsulfanyl)phenyl]-5-(tetrahydro-2H-pyran-4-yl)pent-1-en-3-one
pyrazinecarboxaldehyde
5-[3-fluoro-4-(methylsulfanyl)phenyl]-1-(pyrazin-2-yl)-6-(tetrahydro-2H-pyran-4-yl)hexane-1,4-dione
Conditions | Yield |
---|---|
With 3-benzyl-5-(2-hydroxyethyl)-4-methyl-1,3-thiazol-3-ium chloride; triethylamine In ethanol for 2h; Reflux; | 75% |
pyrazinecarboxaldehyde
1,2-di(pyrazin-2-yl)ethene-1,2-diol
Conditions | Yield |
---|---|
With potassium cyanide In water at 20℃; for 1h; | 73% |
phenylmagnesium chloride
pyrazinecarboxaldehyde
(α-hydroxybenzyl)pyrazine
Conditions | Yield |
---|---|
In tetrahydrofuran at -78 - 20℃; for 0.25h; | 73% |
pyrazinecarboxaldehyde
(R)-2-methylpropane-2-sulfinamide
(R,E)-2-methyl-N-(pyrazin-2-ylmethylene)propane-2-sulfinamide
Conditions | Yield |
---|---|
With caesium carbonate In dichloromethane at 20℃; Inert atmosphere; | 72% |
Conditions | Yield |
---|---|
In ethanol at 20℃; for 24h; | 71% |
Conditions | Yield |
---|---|
With sodium acetate; acetic anhydride; acetic acid for 3h; Reflux; | 71% |
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