Jinhua huayi chemical co., ltd. is dedicated to the development, production and marketing of chemicals. On the basis of equality and mutual benefit, and under the principle of customer first, credit first, quality first, we are ready to join hands
Cas:638-02-8
Min.Order:100 Gram
Negotiable
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:638-02-8
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:638-02-8
Min.Order:0 Metric Ton
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Type:Manufacturers
inquiryhigh purity Appearance:Colorless or light yellow liquid Storage:cold storage Package:meet the demand of customer Application:Biomedical reagents Transportation:by sea or by air Port:shanghai
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:638-02-8
Min.Order:1 Gram
FOB Price: $0.1
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:638-02-8
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 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
Cas:638-02-8
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
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
Cas:638-02-8
Min.Order:1 Kilogram
FOB Price: $9.0 / 99.0
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
Cas:638-02-8
Min.Order:10 Gram
FOB Price: $146.0 / 176.0
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
Cas:638-02-8
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry2,5-Dimethylthiophene CAS:638-02-8 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 inter
Cas:638-02-8
Min.Order:1 Gram
Negotiable
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
Cas:638-02-8
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
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
Best 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
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
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
Cas:638-02-8
Min.Order:0 Metric Ton
Negotiable
Type:Other
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
Cas:638-02-8
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiry2,5-DIMETHYLTHIOPHENE;2,5-DIMETHYLTHIOPHENE, 98.5%; 2 5-DIMETHYLTHIOPHENE 98+%; 2,5-Dimethylthiophene, 98.50%; Thiophene, 2,5-dimethyl-; 2,5-DIMETHYTHIOPHENE; 2,5 -Thioxene; 2,5-DiMethylthiophene, 98.5% 25ML CAS No.: 638-02-8 Molecular formula:
Cas:638-02-8
Min.Order:100 Gram
Negotiable
Type:Lab/Research institutions
inquiry2,5-Dimethylthiophene Chemical Properties Melting point -63°C Boiling point 134 °C/740 mmHg (lit.) density 0.985 g/mL at 25 °C (lit.) refractive index n20/D 1.512(lit.) Fp 75 °F storage temp. Keep in dark place
Cas:638-02-8
Min.Order:1 Gram
FOB Price: $66.0
Type:Lab/Research institutions
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:638-02-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryhigh 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
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
Cas:638-02-8
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiryOur clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS
TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp
Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali
"HANGZHOU TIANYE CHEMICALS Co.LTD , Located in Eastern Science and Innovation Park Hangzhou .We are a high-tech enterprise specialized in technical research and development, production, development and trade of chemical products. We supply Multiple s
2,5-Dimethylthiophene cas 638-02-8Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
5-methylthiophene-2-carboxaldehyde
2,5-DIMETHYLTHIOPHENE
Conditions | Yield |
---|---|
Stage #1: 5-methylthiophene-2-carboxaldehyde With hydrazine hydrate Wolff-Kishner-Huang Minlon Reduction; Stage #2: With potassium hydroxide | 96% |
With potassium hydroxide; hydrazine hydrate; ethylene glycol | |
With potassium hydroxide; hydrazine |
Conditions | Yield |
---|---|
With Lawessons reagent at 140℃; for 1h; | 87% |
With diphosphorus pentasulfide In tetrachloromethane for 4h; Heating; | 76% |
With diphosphorus trisulfide |
Conditions | Yield |
---|---|
With hydrogenchloride; hydrogen sulfide In acetic acid Ambient temperature; further acids, solvents; | 80% |
With hydrogenchloride; zinc sulfide In ethanol at 40℃; Product distribution; Further Variations:; Temperatures; Reagents; concentrations of reagents; time; Substitution; | 80% |
With hydrogenchloride; zinc sulfide In ethanol at 40℃; Substitution; | 80% |
thiophene
Dimethyldisulphide
A
2-Methylthiophene
B
2,3,4-trimethylthiophene
C
2,5-DIMETHYLTHIOPHENE
Conditions | Yield |
---|---|
With zeolite HZSM-5 at 300℃; under 760.051 Torr; for 0.00236111h; Time; Flow reactor; | A 19% B 18% C 12% |
With HZSM-5 zeolite (SiO2/Al2O3 = 34) at 300℃; under 760.051 Torr; for 2h; Catalytic behavior; Temperature; Flow reactor; Gas phase; Inert atmosphere; |
Conditions | Yield |
---|---|
With iodine; mercury(II) oxide Behandeln mit Methyljodid und Natrium in Aether; | |
Multi-step reaction with 2 steps 1: Einleiten von Bromdaempfen 2: sodium View Scheme | |
Multi-step reaction with 2 steps 1: trichlorophosphate / 20 °C 2: hydrazine hydrate View Scheme |
Conditions | Yield |
---|---|
With sodium |
5-methyl-thiophene-2-carbaldehyde semicarbazone
2,5-DIMETHYLTHIOPHENE
Conditions | Yield |
---|---|
With sulfur at 420℃; |
Conditions | Yield |
---|---|
at 650 - 670℃; beim Durchleiten mit Leuchtgas und Schwefelwasserstoff durch Roehren aus Marquardtscher Masse; |
Conditions | Yield |
---|---|
With sulfur at 420℃; |
2-Methylthiophene
Methyl fluoride
A
2,3-dimethylthiophene
B
2,4-dimethylthiophene
C
2,5-DIMETHYLTHIOPHENE
Conditions | Yield |
---|---|
With oxygen; trimethylamine In gas at 37.5℃; Product distribution; Kinetics; Mechanism; radiolysis: 1.5*104 Gy at 5*105 Gy h-1; variable pressures; |
2-Methylthiophene
A
thiophene
B
2,3-dimethylthiophene
C
2,5-DIMETHYLTHIOPHENE
D
toluene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 15.3 % Chromat. B 1.8 % Chromat. C 4.9 % Chromat. D 1.2 % Chromat. |
2-Methylthiophene
A
thiophene
B
2,5-DIMETHYLTHIOPHENE
C
toluene
D
benzene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 15.3 % Chromat. B 4.9 % Chromat. C 1.2 % Chromat. D 8.6 % Chromat. |
2-Methylthiophene
A
2-ethylthiophene
B
2,4-dimethylthiophene
C
2,5-DIMETHYLTHIOPHENE
D
3-Methylthiophene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 11.7 % Chromat. B 0.6 % Chromat. C 4.9 % Chromat. D 9.2 % Chromat. |
2,3-dimethylthiophene
A
thiophene
B
2-ethylthiophene
C
2,5-DIMETHYLTHIOPHENE
D
3-Methylthiophene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 3.1 % Chromat. B 1.5 % Chromat. C 1.0 % Chromat. D 12.8 % Chromat. |
3,4-dimethylthiophene
A
2,3-dimethylthiophene
B
2,4-dimethylthiophene
C
2,5-DIMETHYLTHIOPHENE
D
3-Methylthiophene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 5.1 % Chromat. B 6.2 % Chromat. C 1.1 % Chromat. D 12.2 % Chromat. |
3,4-dimethylthiophene
A
2,4-dimethylthiophene
B
2,5-DIMETHYLTHIOPHENE
C
3-Methylthiophene
D
benzene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 6.2 % Chromat. B 1.1 % Chromat. C 12.2 % Chromat. D 17.6 % Chromat. |
2,4-dimethylthiophene
A
2,3-dimethylthiophene
B
3,4-dimethylthiophene
C
2-ethylthiophene
D
2,5-DIMETHYLTHIOPHENE
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 0.6 % Chromat. B 2.9 % Chromat. C 1.2 % Chromat. D 3.5 % Chromat. |
2,4-dimethylthiophene
A
2-Methylthiophene
B
3,4-dimethylthiophene
C
2,5-DIMETHYLTHIOPHENE
D
3-Methylthiophene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 6.6 % Chromat. B 2.9 % Chromat. C 3.5 % Chromat. D 9.5 % Chromat. |
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