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:21948-70-9
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
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:21948-70-9
Min.Order:1 Kilogram
Negotiable
Type:Manufacturers
inquiry1、Our factory passed ISO 9001, ISO 14001, ISO 22000 system certification; HALAL 、KOSHER、FCC AND FDA certificate are available. We can provide customers with better prices, and the supply is stable. 2、We founded in 2004,10% of the staff have more tha
Cas:21948-70-9
Min.Order:1 Kilogram
Negotiable
Type:Manufacturers
inquiryColorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards. Colorcom prides itself on superior customer and technical focus, while focusing on
Our 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
Cas:21948-70-9
Min.Order:1 Kilogram
Negotiable
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
Cas:21948-70-9
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryProduct name (Methylthio)pyrazine CAS Number 21948-70-9 Synonyms Pyrazine,2-(Methylthio)-;PYRAZINYLMETHYL SULFIDE;(METHYLTHIO)PYRAZINE;METHYL PYRAZINYL SULFIDE;FEMA NUMBER 3231;FEMA 3231;2-(METHYLTHIO)PYRAZINE;2-M
Cas:21948-70-9
Min.Order:1 Kilogram
FOB Price: $1.0
Type:Other
inquiryWe are leading fine chemicals supplier in China and Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...) 2.Organic Phosphine Ligands (Tert-butyl-phosphine.Cyclohexyl-phosphine...) 3.OLED intermediat
Cas:21948-70-9
Min.Order:1 Kilogram
FOB Price: $4.0 / 5.0
Type:Lab/Research institutions
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
Cas:21948-70-9
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryProduct Detail Minimum Order Qty. 10 Gram
Cas:21948-70-9
Min.Order:20 Metric Ton
Negotiable
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
Cas:21948-70-9
Min.Order:10 Kilogram
Negotiable
Type:Trading Company
inquiry2-(Methylthio)pyrazine CAS: 21948-70-9 Specification Item Standard Test Results Identification A.H-NMR:Comply with the structure Complies B.LC-MS:Comply
Cas:21948-70-9
Min.Order:1 Kilogram
Negotiable
Type:Other
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
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
Cas:21948-70-9
Min.Order:0 Metric Ton
Negotiable
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
Cas:21948-70-9
Min.Order:0 Metric Ton
Negotiable
Type:Other
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
Cas:21948-70-9
Min.Order:0
Negotiable
Type:Lab/Research institutions
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:21948-70-9
Min.Order:100 Gram
FOB Price: $100.0 / 2000.0
Type:Lab/Research institutions
inquiryProduct name: 2-Methylthiopyrazine CAS No.:21948-70-9 Molecule Formula:C5H6N2S Molecule Weight:126.18 Purity: 99.0% Package: 25kg/drum Description:Clear colorless to slightly yellow liquid Manufacture Standards:Enterprise Standard
Cas:21948-70-9
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryGMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
factory?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
Cas:21948-70-9
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
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
Shandong Mopai Biotechnology 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 chemicals. W
Cas:21948-70-9
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiry1.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
Cas:21948-70-9
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
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
Cas:21948-70-9
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Trading Company
inquiryThe process is mature and can be mass produced to 100 kg, with good quality and purity up to 99%.The product has a large stock and can be supplied stably. Package:bottle Application:Drug R&D Transportation:Sealed drying(25℃) Port:ShangHai
Cas:21948-70-9
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
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
R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou
high 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 |
---|---|
In 1-methyl-pyrrolidin-2-one at 80℃; for 0.0138889h; microwave irradiation; | 88% |
In N,N-dimethyl-formamide at 25℃; for 24h; Inert atmosphere; | 49% |
Conditions | Yield |
---|---|
With 1,4-diaza-bicyclo[2.2.2]octane; fac-tris(2-phenylpyridinato-N,C2')iridium(III); dimethyl sulfoxide In acetonitrile at 20℃; for 24h; Irradiation; Sealed tube; chemoselective reaction; | 85% |
2-bromopyrazine
boron dimethyl-trifluoro sulphide
2-(methylthio)pyrazine
Conditions | Yield |
---|---|
In neat (no solvent) at 60℃; for 16h; Sealed tube; | 57% |
Conditions | Yield |
---|---|
With rat liver microsomes In phosphate buffer at 37℃; for 0.5h; pH=7.5; Enzyme kinetics; Methylation; Enzymatic reaction; |
2-chloropyrazin
methyl iodide
A
1,4-pyrazine
B
2-(methylthio)pyrazine
Conditions | Yield |
---|---|
Stage #1: 2-chloropyrazin With potassium tert-butylate; thiourea In dimethyl sulfoxide for 3h; UV-irradiation; Stage #2: methyl iodide In water; dimethyl sulfoxide | A n/a B 83 % Chromat. |
Conditions | Yield |
---|---|
In acetonitrile at 20℃; for 0.0833333h; | 95% |
tributyl(4-chlorophenyl)stannane
2-(methylthio)pyrazine
2 (4-chlorophenyl)-pyrazine
Conditions | Yield |
---|---|
With trans benzyl(chloro)bis(triphenylphosphine)palladium(II); copper(I) 2-hydroxy-3-methylbenzoate In tetrahydrofuran at 50℃; | 92% |
trimethylsilyl cyanide
2-(methylthio)pyrazine
3-(methylthio)pyrazine-2-carbonitrile
Conditions | Yield |
---|---|
Stage #1: 2-(methylthio)pyrazine With trifluoromethylsulfonic anhydride In chloroform at 20℃; for 1h; Inert atmosphere; Sealed tube; Stage #2: trimethylsilyl cyanide In chloroform at 60℃; for 3h; Inert atmosphere; Sealed tube; Stage #3: With 4-methyl-morpholine In chloroform at 60℃; for 17h; Inert atmosphere; Sealed tube; | 92% |
Conditions | Yield |
---|---|
at 80℃; for 2h; | 90% |
Conditions | Yield |
---|---|
Stage #1: 2-(methylthio)pyrazine With 2,2,6,6-tetramethylpiperidinylmagnesium chloride lithium chloride complex In tetrahydrofuran at -20℃; for 4h; Inert atmosphere; Schlenk technique; Stage #2: zinc trimethylacetate In tetrahydrofuran at 0 - 25℃; for 0.25h; Inert atmosphere; Schlenk technique; | 89% |
3-amino-4-fluorotoluene
2-(methylthio)pyrazine
Conditions | Yield |
---|---|
With potassium hexamethylsilazane at 100℃; for 16h; Inert atmosphere; | 89% |
With potassium hexamethylsilazane In tetrahydrofuran at 100℃; for 16h; Inert atmosphere; Schlenk technique; Sealed tube; Green chemistry; | 89% |
silver trifluoromethanesulfonate
2-(methylthio)pyrazine
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.5h; Darkness; Inert atmosphere; | 88% |
Conditions | Yield |
---|---|
tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran at 55 - 60℃; for 1h; Substitution; benzylation; | 86% |
tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran at 60℃; for 2h; | 45% |
p-methoxybenzyl chloride
2-(methylthio)pyrazine
2-(4-methoxybenzyl)pyrazine
Conditions | Yield |
---|---|
Stage #1: p-methoxybenzyl chloride With lithium chloride; zinc Inert atmosphere; Stage #2: 2-(methylthio)pyrazine With bis(acetylacetonate)nickel(II); bis[2-(diphenylphosphino)phenyl] ether In tetrahydrofuran at 25℃; Inert atmosphere; | 84% |
2-(methylthio)pyrazine
2-(4-methoxybenzyl)pyrazine
Conditions | Yield |
---|---|
Stage #1: 2-(methylthio)pyrazine With bis(acetylacetonate)nickel(II); bis[2-(diphenylphosphino)phenyl] ether In tetrahydrofuran for 0.166667h; Inert atmosphere; Large scale reaction; Stage #2: (4-methoxybenzyl)zinc chloride * lithium chloride In tetrahydrofuran at 25℃; for 15h; Inert atmosphere; | 84% |
Conditions | Yield |
---|---|
With chloro-trimethyl-silane; (4,4'-di-tert-butyl-2,2'-dipyridyl)-bis-(2-phenylpyridine(-1H))-iridium(III) hexafluorophosphate at 20℃; for 16h; Inert atmosphere; Irradiation; Sealed tube; | 84% |
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.5h; Darkness; Inert atmosphere; | 84% |
2-(methylthio)pyrazine
2-(naphthalen-1-yl)pyrazine
Conditions | Yield |
---|---|
Stage #1: 2-(methylthio)pyrazine With dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; palladium diacetate In tetrahydrofuran for 0.166667h; Inert atmosphere; Stage #2: 1-naphthylzinc iodide–lithium chloride In tetrahydrofuran at 25℃; for 18h; Inert atmosphere; | 83% |
2-(methylthio)pyrazine
2-iodo-3-(methylthio)pyrazine
Conditions | Yield |
---|---|
Stage #1: 2-(methylthio)pyrazine With 2,2,6,6-tetramethylpiperidinylmagnesium chloride lithium chloride complex; boron trifluoride diethyl etherate In tetrahydrofuran at -40℃; Inert atmosphere; Stage #2: With iodine In tetrahydrofuran at -40 - 25℃; Inert atmosphere; regioselective reaction; | 81% |
2-(methylthio)pyrazine
ethyl 2-bromomethyl-2-propenoate
ethyl 2-{[3-(methylsulfanyl)pyrazin-2-yl]methyl}prop-2-enoate
Conditions | Yield |
---|---|
Stage #1: 2-(methylthio)pyrazine With tmp4Zr*4MgCl2*6LiCl In tetrahydrofuran at -35℃; for 0.333333h; Inert atmosphere; Stage #2: ethyl 2-bromomethyl-2-propenoate With iodine In tetrahydrofuran at -40℃; for 1h; Inert atmosphere; regioselective reaction; | 81% |
2-(methylthio)pyrazine
[Ru(CO)3Cl2(2-thiomethylpyrazine-κN4)]
Conditions | Yield |
---|---|
In ethanol soln. of (Ru(CO)3Cl2)2 in degassed EtOH mixed with soln. of 2-methylthiopyrazine in degassed EtOH; mixt. stirred for 17 h; ppt. filtered off; washed with EtOH; dried under vac.; elem. anal.; | 80% |
Conditions | Yield |
---|---|
With Singacycle A1; lithium hexamethyldisilazane In toluene at 80℃; for 2h; Glovebox; Sealed tube; | 80% |
silver(I) hexafluorophosphate
2-(methylthio)pyrazine
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.5h; Darkness; Inert atmosphere; | 79% |
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; copper(l) iodide; triethylamine In tetrahydrofuran at 100℃; for 1h; Sonogashira-type coupling; Microwave irradiation; | 74% |
Conditions | Yield |
---|---|
With bis(acetylacetonate)nickel(II); bis[2-(diphenylphosphino)phenyl] ether In tetrahydrofuran at 25℃; for 14h; Inert atmosphere; | 74% |
Conditions | Yield |
---|---|
With potassium hexamethylsilazane In toluene at 60℃; for 24h; Schlenk technique; Inert atmosphere; | 71% |
4-methoxyphenylacetylen
2-(methylthio)pyrazine
2-((4-methoxyphenyl)ethynyl)pyrazine
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; copper(l) iodide; triethylamine In tetrahydrofuran at 100℃; for 1h; Sonogashira-type coupling; Microwave irradiation; | 70% |
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; copper(l) iodide; triethylamine In tetrahydrofuran at 100℃; for 1h; Sonogashira-type coupling; Microwave irradiation; | 68% |
3-Trifluoromethylbenzyl chloride
2-(methylthio)pyrazine
2-[3-(trifluoromethyl)benzyl]pyrazine
Conditions | Yield |
---|---|
Stage #1: 3-Trifluoromethylbenzyl chloride With lithium chloride; zinc Inert atmosphere; Stage #2: 2-(methylthio)pyrazine With dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; palladium diacetate In tetrahydrofuran at 25℃; Inert atmosphere; | 68% |
4-methoxy-benzaldehyde
2-(methylthio)pyrazine
(4-methoxyphenyl)(3-(methylthio)pyrazin-2-yl)methanol
Conditions | Yield |
---|---|
Stage #1: 2-(methylthio)pyrazine With 2,2,6,6-tetramethylpiperidinylmagnesium chloride lithium chloride complex; boron trifluoride diethyl etherate In tetrahydrofuran at -40℃; for 0.166667h; Inert atmosphere; Schlenk technique; Stage #2: 4-methoxy-benzaldehyde In tetrahydrofuran at -40℃; for 1h; Inert atmosphere; Schlenk technique; Stage #3: With ammonia; water; ammonium chloride In tetrahydrofuran Inert atmosphere; Schlenk technique; | 67% |
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