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inquiry1. 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
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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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inquiryHigh quality 99%up Frequenly and commercially produced Produced under GMP regulation. With cGMP and DMF documents. One of the biggest prodcer in China Appearance:White to off-white crystalline powder Storage:room temperature Package:25kg/drum or
Stock products, own laboratory Appearance:white to beige powder Storage:2-8°C Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:shanghai
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inquiry8-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-1,3-diethyl-7-methyl-purine-2,6 -dione Basic information Product Name: 8-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-1,3-diethyl-7-methyl-pu
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inquiryOur Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con
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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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inquiryWe are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery
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inquiry8-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-1,3-diethyl-7-methyl-purine-2,6 -dione CAS:155270-99-8 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemic
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inquiryAPI name: Istradefylline Certificates: GMP, DMF CAS No.: 155270-99-8 Chemical name: 8-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-1,3-diethyl-7-methylpurine-2,6-dione UNII-2GZ0LIK7T4 KW 6002 Formula: C20H24N4O4 Structure: Appearance:White or of
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:As
Our company provides one-stop services of research - development - production for a variety of special prouducts. Not only do we make effective use of our strong technological strength, but also establish of cooperative relations with several well-
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inquiryCompany 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
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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
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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
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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
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inquiryProduct Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
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inquiryWe are leading fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...)
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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,
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inquiryShandong 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
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inquiryHigh quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:Active Pharmaceutical I
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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
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inquiryhigh purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier
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
Superior quality, moderate price & quick delivery. Appearance:white crystalline powder Storage:Sealed in a cool ,dry and microtherm place , avoid light . Package:100g/bottle,1kg/bottle,25kg/drum or as per your request Application:It is an impo
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inquiryAcmec 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
8-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-1,3-diethyl-2,3,6,7-tetrahydro-1H-purine-2,6-dione
methyl iodide
istradefylline
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 50℃; for 5h; | 99% |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 0.5h; | 95% |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 1h; Inert atmosphere; | 95% |
1,3-diethyl-7-methyl-1H-purine-2,6(3H,7H)-dione
3,4-dimethoxystyrene
istradefylline
Conditions | Yield |
---|---|
Stage #1: 1,3-diethyl-7-methyl-1H-purine-2,6(3H,7H)-dione With pyridine; palladium diacetate; copper(II) acetate monohydrate; copper(l) chloride In N,N-dimethyl acetamide at 20℃; for 0.0833333h; Heck reaction; Inert atmosphere; Stage #2: 3,4-dimethoxystyrene In N,N-dimethyl acetamide at 120℃; for 20h; Heck reaction; Inert atmosphere; | 95% |
istradefylline
Conditions | Yield |
---|---|
With sodium methylate In 1,4-dioxane at 90 - 95℃; for 3h; Reagent/catalyst; Temperature; | 94% |
istradefylline
Conditions | Yield |
---|---|
With N,N'-diethylurea In 1,4-dioxane at 90 - 95℃; for 4h; | 92.5% |
3,4-dimethoxy-benzaldehyde
istradefylline
Conditions | Yield |
---|---|
With acetic anhydride; acetic acid at 110℃; for 10h; | 92% |
N,N'-diethylurea
(E)-3,4-dimethoxycinnamic chloride
istradefylline
Conditions | Yield |
---|---|
Stage #1: N,N'-diethylurea; ethyl 2-methylaminocyanoacetate In 1,4-dioxane at 95 - 100℃; for 5h; Stage #2: With potassium hydroxide at 10 - 95℃; for 3h; Stage #3: (E)-3,4-dimethoxycinnamic chloride With triethylamine In 1,4-dioxane at 10 - 45℃; for 5h; Temperature; | 90.9% |
carbonic acid dimethyl ester
8-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-1,3-diethyl-2,3,6,7-tetrahydro-1H-purine-2,6-dione
istradefylline
Conditions | Yield |
---|---|
With potassium tert-butylate In N,N-dimethyl-formamide at 135℃; for 6h; Reagent/catalyst; Temperature; Molecular sieve; | 86% |
With potassium tert-butylate In N,N-dimethyl-formamide at 135℃; for 6h; Reagent/catalyst; Temperature; Molecular sieve; | 86% |
dimethyl sulfate
8-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-1,3-diethyl-2,3,6,7-tetrahydro-1H-purine-2,6-dione
istradefylline
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 24h; Darkness; | 71.8% |
carbonic acid dimethyl ester
(E)-N-(6-amino-1,3-diethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-3-(3,4-dimethoxyphenyl)propenamide
istradefylline
Conditions | Yield |
---|---|
Stage #1: (E)-N-(6-amino-1,3-diethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-3-(3,4-dimethoxyphenyl)propenamide With potassium carbonate In N,N-dimethyl-formamide at 120℃; for 0.5h; Stage #2: carbonic acid dimethyl ester In N,N-dimethyl-formamide at 120 - 140℃; for 2h; Temperature; | 52.4% |
5,6-diamino-1,3-diethyluracil
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 65 percent / pyridine / CH2Cl2 / 16 h / 20 °C 2: 92 percent / 1,1,1,3,3,3-hyxamethyldisilazane; (NH4)2SO4 / 4 h / 170 - 180 °C 3: 95 percent / potassium carbonate / dimethylformamide / 0.5 h / 20 °C View Scheme | |
Multi-step reaction with 2 steps 1.1: EDAC / dioxane; H2O 1.2: 35 percent / aq. NaOH / Heating 2.1: K2CO3 / dimethylformamide View Scheme | |
Multi-step reaction with 2 steps 1: 1) 1-<3-(dimethylamino)propyl>-3-ethylcarbodiimide hydrochloride, 2) 1N NaOH / 1) dioxane, H2O, 2) dioxane, H2O, reflux 2: K2CO3 / dimethylformamide / 50 °C View Scheme |
6-amino-1,3-diethyl-5-nitroso-1H,3H-pyrimidine-2,4-dione
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 80 percent / NH3; sodium dithionite / H2O / 60 °C 2: 65 percent / pyridine / CH2Cl2 / 16 h / 20 °C 3: 92 percent / 1,1,1,3,3,3-hyxamethyldisilazane; (NH4)2SO4 / 4 h / 170 - 180 °C 4: 95 percent / potassium carbonate / dimethylformamide / 0.5 h / 20 °C View Scheme | |
Multi-step reaction with 4 steps 1.1: ammonium hydroxide; sodium dithionite / water / 0.5 h 2.1: pyridine / dichloromethane / 24 h / 20 °C 3.1: acetonitrile / Microwave irradiation 3.2: 5 h / 160 °C / Microwave irradiation 4.1: potassium carbonate / N,N-dimethyl-formamide / 1 h / 20 °C View Scheme | |
Multi-step reaction with 5 steps 1: palladium 10% on activated carbon; hydrogen / methanol / 15 °C / 3750.38 - 4500.45 Torr 2: N-ethyl-N,N-diisopropylamine / dichloromethane / 4 h / 10 - 35 °C 3: sodium hydroxide / propan-1-ol / 5 h / Reflux 4: potassium carbonate / N,N-dimethyl-formamide / 3 h / 50 - 60 °C 5: acetic acid; acetic anhydride / 10 h / 110 °C View Scheme | |
Multi-step reaction with 4 steps 1.1: potassium carbonate / water / 30 - 50 °C 1.2: 1 h / 20 °C 2.1: oxalyl dichloride / dichloromethane; N,N-dimethyl-formamide / 1.5 h / 25 °C 2.2: 1 h / 20 °C 3.1: sodium hydroxide / water; 1,4-dioxane / 2 h / 60 °C 4.1: potassium carbonate / N,N-dimethyl-formamide / 24 h / 20 °C / Darkness View Scheme |
6-amino-1,3-diethyluracil
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 74 percent / acetic acid; NaNO2 / H2O / 0.25 h / 50 - 60 °C 2: 80 percent / NH3; sodium dithionite / H2O / 60 °C 3: 65 percent / pyridine / CH2Cl2 / 16 h / 20 °C 4: 92 percent / 1,1,1,3,3,3-hyxamethyldisilazane; (NH4)2SO4 / 4 h / 170 - 180 °C 5: 95 percent / potassium carbonate / dimethylformamide / 0.5 h / 20 °C View Scheme | |
Multi-step reaction with 5 steps 1.1: sodium nitrite / acetic acid / 0.25 h / 50 - 60 °C 2.1: ammonium hydroxide; sodium dithionite / water / 0.5 h 3.1: pyridine / dichloromethane / 24 h / 20 °C 4.1: acetonitrile / Microwave irradiation 4.2: 5 h / 160 °C / Microwave irradiation 5.1: potassium carbonate / N,N-dimethyl-formamide / 1 h / 20 °C View Scheme |
(E)-N-(6-amino-1,3-diethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-3-(3,4-dimethoxyphenyl)propenamide
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 92 percent / 1,1,1,3,3,3-hyxamethyldisilazane; (NH4)2SO4 / 4 h / 170 - 180 °C 2: 95 percent / potassium carbonate / dimethylformamide / 0.5 h / 20 °C View Scheme | |
Multi-step reaction with 2 steps 1.1: acetonitrile / Microwave irradiation 1.2: 5 h / 160 °C / Microwave irradiation 2.1: potassium carbonate / N,N-dimethyl-formamide / 1 h / 20 °C View Scheme |
3,4-dimethoxy-trans-cinnamic acid
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: EDAC / dioxane; H2O 1.2: 35 percent / aq. NaOH / Heating 2.1: K2CO3 / dimethylformamide View Scheme | |
Multi-step reaction with 2 steps 1: 1) 1-<3-(dimethylamino)propyl>-3-ethylcarbodiimide hydrochloride, 2) 1N NaOH / 1) dioxane, H2O, 2) dioxane, H2O, reflux 2: K2CO3 / dimethylformamide / 50 °C View Scheme | |
Multi-step reaction with 4 steps 1.1: thionyl chloride / toluene / 16 h / 75 °C 2.1: pyridine / dichloromethane / 24 h / 20 °C 3.1: acetonitrile / Microwave irradiation 3.2: 5 h / 160 °C / Microwave irradiation 4.1: potassium carbonate / N,N-dimethyl-formamide / 1 h / 20 °C View Scheme |
N,N-diethylurea
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1.1: acetic acid / 2 h / 80 °C 2.1: sodium nitrite / acetic acid / 0.25 h / 50 - 60 °C 3.1: ammonium hydroxide; sodium dithionite / water / 0.5 h 4.1: pyridine / dichloromethane / 24 h / 20 °C 5.1: acetonitrile / Microwave irradiation 5.2: 5 h / 160 °C / Microwave irradiation 6.1: potassium carbonate / N,N-dimethyl-formamide / 1 h / 20 °C View Scheme |
(E)-3,4-dimethoxycinnamic chloride
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: pyridine / dichloromethane / 24 h / 20 °C 2.1: acetonitrile / Microwave irradiation 2.2: 5 h / 160 °C / Microwave irradiation 3.1: potassium carbonate / N,N-dimethyl-formamide / 1 h / 20 °C View Scheme | |
Multi-step reaction with 3 steps 1: pyridine / 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran / 20 °C / Large scale 2: sodium hydroxide / isopropyl alcohol; water / 75 - 80 °C 3: potassium carbonate / N,N-dimethyl-formamide / 10 h / 20 °C View Scheme | |
Multi-step reaction with 2 steps 1: triethylamine / dichloromethane / 5 h / 5 - 35 °C 2: N,N'-diethylurea / 1,4-dioxane / 4 h / 90 - 95 °C View Scheme |
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: N-ethyl-N,N-diisopropylamine / dichloromethane / 4 h / 10 - 35 °C 2: sodium hydroxide / propan-1-ol / 5 h / Reflux 3: potassium carbonate / N,N-dimethyl-formamide / 3 h / 50 - 60 °C 4: acetic acid; acetic anhydride / 10 h / 110 °C View Scheme |
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: sodium hydroxide / propan-1-ol / 5 h / Reflux 2: potassium carbonate / N,N-dimethyl-formamide / 3 h / 50 - 60 °C 3: acetic acid; acetic anhydride / 10 h / 110 °C View Scheme |
3,4-dimethoxystyrene
istradefylline
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; tris-(o-tolyl)phosphine; palladium dichloride In N,N-dimethyl-formamide at 100℃; for 12h; Inert atmosphere; | 58.87 g |
With N-ethyl-N,N-diisopropylamine; tris-(o-tolyl)phosphine; palladium dichloride In N,N-dimethyl-formamide at 100℃; for 12h; Inert atmosphere; | 58.87 g |
N,N'-diethylurea
istradefylline
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 1,4-dioxane / 4 h / 100 - 105 °C 2: N-ethyl-N,N-diisopropylamine / tetrahydrofuran / 4 h / 10 - 55 °C 3: sodium methylate / 1,4-dioxane / 3 h / 90 - 95 °C View Scheme |
5,6-diamino-1,3-diethyluracil
(E)-3,4-dimethoxycinnamic chloride
istradefylline
Conditions | Yield |
---|---|
With sodium carbonate In ethanol at 60℃; for 3.5h; |
istradefylline
Conditions | Yield |
---|---|
With aluminum (III) chloride In chloroform at 30 - 40℃; for 10h; UV-irradiation; Inert atmosphere; | 87.2% |
for 1.66667h; Irradiation; | 12 mg |
1,5-dibromo-pentane
istradefylline
Conditions | Yield |
---|---|
With N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate In acetone at 20℃; | 69.2% |
1,4-dibromo-butane
istradefylline
Conditions | Yield |
---|---|
With N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate In acetone at 20℃; | 59.9% |
istradefylline
Conditions | Yield |
---|---|
In acetone Irradiation; | 16% |
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