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
Cas:4858-85-9
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryDayangchem'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:4858-85-9
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryXi'an Kono Chem Co., Ltd., founded in 2014, is a holding enterprise of Hongkong Pioneer Biotech Group. It is an export-oriented manufacturing enterprise supported by the Ministry of Commerce. Kono Chem is located in Xi'an, Shaanxi Province,
Cas:4858-85-9
Min.Order:100 Kilogram
FOB Price: $80.0 / 100.0
Type:Other
inquiryWelcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our
Cas:4858-85-9
Min.Order:0 Metric Ton
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Type:Manufacturers
inquiryManufacturer supply 2,3-Dichloropyrazine CAS 4858-85-9 with good quality Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/F
Cas:4858-85-9
Min.Order:10 Kilogram
FOB Price: $10.0
Type:Trading Company
inquiryHebei yanxi chemical co., LTD is a professional research, development and production Cyromazine、lead diacetate trihydrate /Lead acetate trihydrateC、 2-phenylacetamide 、 4-Aminophenyl-1-phenethylpiperidine 、Citric acid monohydrate 、 Citric acid/c
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Min.Order:1 Kilogram
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Type:Manufacturers
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
1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s
Cas:4858-85-9
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiry
Cas:4858-85-9
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Manufacturers
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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Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryOur advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva
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Type:Trading Company
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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Min.Order:1 Kilogram
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Type:Trading Company
inquiryOur 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
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Min.Order:10 Kilogram
Negotiable
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
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Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryAbout us Our 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.
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Min.Order:1 Kilogram
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Type:Trading Company
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
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Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiry1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures s
Cas:4858-85-9
Min.Order:1 Kilogram
FOB Price: $50.0 / 100.0
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 powder/crystal 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:Common products:Sea/A
Cas:4858-85-9
Min.Order:100 Metric Ton
Negotiable
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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:4858-85-9
Min.Order:4 Kilogram
Negotiable
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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:4858-85-9
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
Our Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter
Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and
Cas:4858-85-9
Min.Order:1 Gram
FOB Price: $1.0
Type:Lab/Research institutions
inquiryZibo 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
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Min.Order:10 Gram
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inquiryWe are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov
Cas:4858-85-9
Min.Order:100 Gram
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Type:Lab/Research institutions
inquirySuperior quality, moderate price & quick delivery. Appearance:clear colorless to light yellow liquid Storage:Well-sealed and put in dry and cool conditions. Protected from direct sunlight or high temperature. Package:as per your request A
Established in May 2015, TaiChem Ltd. is initially invested by a British research and development company and started by PhDs back from aboard. The company is registered in China Medical City (CMC), Taizhou, Jiangsu Province, and the production site
Cas:4858-85-9
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
inquiryProduct name: 2,3-Dichloropyrazine CAS No.:4858-85-9 Molecule Formula:C4H2Cl2N2 Molecule Weight:148.97 Purity: 96% Package: 25kg/drum Description:Light yellow transparent liquid Manufacture Standards:Enterprise Standard TESTING I
Cas:4858-85-9
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry1)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 etc. 3) oem/odm available; 4) rea
Cas:4858-85-9
Min.Order:1 Gram
FOB Price: $5.0
Type:Lab/Research institutions
inquiry2-chloropyrazin
2,3-dichloropyrazine
Conditions | Yield |
---|---|
Stage #1: 2-chloropyrazin With 2,2,6,6-tetramethyl-piperidine; n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.5h; Stage #2: With hexachloroethane In tetrahydrofuran; hexane at -78℃; for 1h; | 90% |
With sulfuryl dichloride In N,N-dimethyl-formamide | 81% |
Conditions | Yield |
---|---|
With trichlorophosphate | 84% |
3-chloropyrazine 1-oxide
A
2,5-dichloropyrazine
B
2,3-dichloropyrazine
C
2,6-dichloropyrazine
Conditions | Yield |
---|---|
With trichlorophosphate for 2h; Heating; Yield given. Yields of byproduct given; | |
With 1,8-diazabicyclo[5.4.0]undec-7-ene; trichlorophosphate for 2h; Heating; Yield given. Yields of byproduct given; |
Conditions | Yield |
---|---|
With trichlorophosphate for 2h; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
3-chloropyrazine 1-oxide
A
2-chloropyrazin
B
2,5-dichloropyrazine
C
2,3-dichloropyrazine
D
2,6-dichloropyrazine
Conditions | Yield |
---|---|
With trichlorophosphate for 2h; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
2-chloropyrazine 1-oxide
A
2-chloropyrazin
B
2,3-dichloropyrazine
C
2,6-dichloropyrazine
Conditions | Yield |
---|---|
With trichlorophosphate for 2h; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
2-chloropyrazin
A
2,3-dichloropyrazine
Conditions | Yield |
---|---|
With chlorine at 475℃; |
1,4-pyrazine
water
chlorine
A
2-chloropyrazin
B
2,5-dichloropyrazine
C
2,3-dichloropyrazine
D
2,6-dichloropyrazine
Conditions | Yield |
---|---|
at 350℃; Product distribution; |
Conditions | Yield |
---|---|
With water; chlorine at 350℃; | |
With water; chlorine at 400 - 500℃; | |
With water; chlorine at 400 - 500℃; |
Conditions | Yield |
---|---|
With trichlorophosphate at 60℃; for 1h; Heating / reflux; |
Conditions | Yield |
---|---|
With ammonia In water at 100℃; for 18h; sealed tube; | 100% |
With ammonium hydroxide In water at 100℃; for 24h; | 90% |
With ammonium hydroxide In tetrahydrofuran at 100℃; for 18h; | 90% |
2,3-dichloropyrazine
(3R)-3-Methyl-1-Tritylpiperazine
(R)-1-(3-chloro-2-pyrazinyl)-2-methyl-4-tritylpiperazine
Conditions | Yield |
---|---|
With potassium carbonate In DMF (N,N-dimethyl-formamide) at 127 - 133℃; for 41.5h; | 100% |
With potassium carbonate In N,N-dimethyl-formamide at 100 - 110℃; for 20h; | 70.8% |
2,3-dichloropyrazine
2-chloro-3-hydrazinopyrazine
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine With hydrazine hydrate In ethanol for 6h; Reflux; Stage #2: With hydrazine hydrate In ethanol for 1h; Reflux; | 100% |
With hydrazine hydrate In ethanol; water Reflux; | 96% |
With hydrazine In ethanol at 80℃; for 1h; | 93% |
2,3-dichloropyrazine
2-phenoxyethanamine
2-Chloro-3-(2-phenoxyethylamino)pyrazine
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In acetonitrile at 180℃; for 0.333333h; microwave irradiation; | 100% |
With potassium carbonate In hexane; ethyl acetate; acetonitrile | 2.36 g (49%) |
2,3-dichloropyrazine
2,4-Dimethoxybenzylamine
3-chloro-N-[(2,4-dimethoxyphenyl)methyl]pyrazin-2-amine
Conditions | Yield |
---|---|
100% | |
at 20℃; for 16h; |
2,3-dichloropyrazine
pinacol benzylboronate
2-benzyl-3-chloropyrazine
Conditions | Yield |
---|---|
With bis-triphenylphosphine-palladium(II) chloride; sodium carbonate In water; acetonitrile at 150℃; for 0.166667h; Inert atmosphere; Microwave irradiation; | 100% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 15h; | 100% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 15h; | 100% |
Conditions | Yield |
---|---|
In tetrahydrofuran for 1h; Inert atmosphere; Cooling with ice; | 100% |
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine; m-tolylboronic acid With tetrakis(triphenylphosphine) palladium(0) In water; toluene at 95℃; for 0.166667h; Suzuki Coupling; Inert atmosphere; Stage #2: With potassium fluoride dihydrate In water; toluene at 95℃; Suzuki Coupling; Inert atmosphere; | 99% |
With bis-triphenylphosphine-palladium(II) chloride; sodium carbonate In water; acetonitrile for 3.66667h; | 80% |
2,3-dichloropyrazine
ditetrazolo<1,5-a:5',1'c>pyrazine
Conditions | Yield |
---|---|
With sodium azide In dimethyl sulfoxide at 20℃; for 48h; | 98% |
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine With lithium hexamethyldisilazane In toluene Stage #2: Isobutyronitrile In toluene at 20℃; for 24h; | 98% |
2,3-dichloropyrazine
propyl cyanide
2-(3-chloropyrazin-2-yl)butanenitrile
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine With lithium hexamethyldisilazane In toluene Stage #2: propyl cyanide In toluene at 20℃; for 24h; | 98% |
2,3-dichloropyrazine
4-trifluoromethylphenylboronic acid
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine; 4-trifluoromethylphenylboronic acid With tetrakis(triphenylphosphine) palladium(0) In water; toluene at 95℃; for 0.166667h; Suzuki Coupling; Inert atmosphere; Stage #2: With potassium fluoride dihydrate In water; toluene at 95℃; Suzuki Coupling; Inert atmosphere; | 98% |
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine; phenylboronic acid With tetrakis(triphenylphosphine) palladium(0) In water; toluene at 95℃; for 0.166667h; Suzuki Coupling; Inert atmosphere; Stage #2: With potassium fluoride dihydrate In water; toluene at 95℃; Suzuki Coupling; Inert atmosphere; | 97% |
With bis-triphenylphosphine-palladium(II) chloride; sodium carbonate In water; acetonitrile Suzuki coupling; | 74% |
2,3-dichloropyrazine
4-methylphenylboronic acid
2,3-bis(p-methylphenyl)pyrazine
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine; 4-methylphenylboronic acid With tetrakis(triphenylphosphine) palladium(0) In water; toluene at 95℃; for 0.166667h; Suzuki Coupling; Inert atmosphere; Stage #2: With potassium fluoride dihydrate In water; toluene at 95℃; Suzuki Coupling; Inert atmosphere; | 97% |
2,3-dichloropyrazine
tert-butyl (1,3-cis)-N-(3-hydroxycyclobutyl)carbamate
tert-butyl ((1S,3S)-3-((3-chloropyrazin-2-yl)oxy)cyclobutyl)carbamate
Conditions | Yield |
---|---|
With caesium carbonate In dimethyl sulfoxide at 80℃; | 96.6% |
Conditions | Yield |
---|---|
With sodium hydroxide In ethanol at 20℃; for 2h; | 96% |
2,3-dichloropyrazine
butyrophenone
2-(3-chloropyrazin-2-yl)-1-phenylbutan-1-one
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine With lithium hexamethyldisilazane In toluene Stage #2: propiophenone In toluene at 60℃; for 24h; | 96% |
2,3-dichloropyrazine
sulfanilamide
4-amino-N-(3-chloro-pyrazin-2-yl)-benzenesulfonamide
Conditions | Yield |
---|---|
With potassium carbonate In N-methyl-acetamide; water; toluene | 95% |
With potassium carbonate |
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine With lithium hexamethyldisilazane In toluene Stage #2: acetonitrile In toluene at 20℃; for 24h; | 95% |
Conditions | Yield |
---|---|
With potassium carbonate In acetonitrile for 20h; Heating; | 95% |
2,3-dichloropyrazine
1-tert-Butyl 4-methyl piperidine-1,4-dicarboxylate
1-tert-butyl 4-methyl 4-(3-chloropyrazin-2-yl)piperidine-1,4-dicarboxylate
Conditions | Yield |
---|---|
With lithium hexamethyldisilazane In tetrahydrofuran at 20℃; for 16h; Inert atmosphere; | 95% |
2,3-dichloropyrazine
2-amino-benzenethiol
10H-benzo[b]pyrazino[2,3-e][1,4]thiazine
Conditions | Yield |
---|---|
With potassium hydroxide In water; N,N-dimethyl-formamide for 4h; Heating; | 94% |
With sodium carbonate In 1,2-dichloro-benzene Heating; |
Conditions | Yield |
---|---|
In 1,2-dichloro-benzene at 140℃; for 1h; | 94% |
2,3-dichloropyrazine
4-aminomethyl-piperidine-1-carboxylic acid benzyl ester
benzyl 4-{[(3-chloropyrazin-2-yl)amino]methyl}piperidine-1-carboxylate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In isopropyl alcohol for 72h; Heating; | 94% |
2,3-dichloropyrazine
4-fluoroboronic acid
2,3-bis(4-fluorophenyl)pyrazine
Conditions | Yield |
---|---|
Stage #1: 2,3-dichloropyrazine; 4-fluoroboronic acid With tetrakis(triphenylphosphine) palladium(0) In water; toluene at 95℃; for 0.166667h; Suzuki Coupling; Inert atmosphere; Stage #2: With potassium fluoride dihydrate In water; toluene at 95℃; Suzuki Coupling; Inert atmosphere; | 94% |
1,3 dithiane
2,3-dichloropyrazine
methyl iodide
2-chloro-3-(2-methyl-1,3-dithian-2-yl)pyrazine
Conditions | Yield |
---|---|
Stage #1: 1,3 dithiane With n-butyllithium In tetrahydrofuran at -20℃; for 1h; Stage #2: methyl iodide In tetrahydrofuran at -50 - 20℃; Stage #3: 2,3-dichloropyrazine With n-butyllithium In tetrahydrofuran at -50 - 20℃; | 93% |
2,3-dichloropyrazine
diphenylamine
5-phenyl-5H-pyrazino[2,3-b]indole
Conditions | Yield |
---|---|
With palladium diacetate; sodium t-butanolate; tricyclohexylphosphine In toluene at 105℃; for 18h; Inert atmosphere; regioselective reaction; | 93% |
Conditions | Yield |
---|---|
In ethanol at 80℃; for 0.5h; Inert atmosphere; Sealed tube; | 93% |
In tetrahydrofuran; dichloromethane | 43.6% |
In tetrahydrofuran at 20℃; for 24h; | 43.6% |
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