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
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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
Cas:32980-71-5
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
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
Cas:32980-71-5
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryWith our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin
Cas:32980-71-5
Min.Order:1 Gram
FOB Price: $6.0 / 9.0
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:32980-71-5
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryAppearance:White crystalline powder Storage:Room temperature Package:1G/Bottle, 10G/Bottle,50G/Bottle Application:Pharmaceutical intermediates Transportation:Express/Sea/Air Port:Any port in china
Cas:32980-71-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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:32980-71-5
Min.Order:1 Gram
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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:32980-71-5
Min.Order:1 Kilogram
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Type:Lab/Research institutions
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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Min.Order:1 Gram
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
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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
Cas:32980-71-5
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
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
Cas:32980-71-5
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryCangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new api, in
Cas:32980-71-5
Min.Order:1 Kilogram
FOB Price: $300.0 / 400.0
Type:Lab/Research institutions
inquiryWe 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:32980-71-5
Min.Order:1 Gram
FOB Price: $2.0
Type:Lab/Research institutions
inquiryOur Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an
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Min.Order:0
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Type:Trading Company
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,
Cas:32980-71-5
Min.Order:1 Milligram
Negotiable
Type:Trading Company
inquiryProduct Name: 2,4,6,8-TETRACHLOROPYRIMIDO[5,4-D]PYRIMIDINE Synonyms: 2,4,6,8-TETRACHLOROPYRIMIDO[5,4-D]PYRIMIDINE;tetrachloropyrimidopyrimidine;tetrachloropyrimido[5,4-d]pyrimidine;2,4,6,8-TETRACHLOROPYRIMIDO[5,4-D]PYRIMIDINE 97+%;2,4,6,8-Tetr
Cas:32980-71-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
Cas:32980-71-5
Min.Order:0
Negotiable
Type:Trading Company
inquiryZhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed
Cas:32980-71-5
Min.Order:1 Kilogram
FOB Price: $2.0
Type:Lab/Research institutions
inquirySAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in custom synthe
Cas:32980-71-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryGOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation
Cas:32980-71-5
Min.Order:1 Kilogram
Negotiable
Type:Other
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
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Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry纯度:98 | 包装信息:1kg/
Cas:32980-71-5
Min.Order:0 Metric Ton
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Type:Manufacturers
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
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Min.Order:0
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Type:Manufacturers
inquiry1.A strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards.2. Now we have established long-term stable re
Cas:32980-71-5
Min.Order:0
Negotiable
Type:Other
inquirybest seller Application:API
Cas:32980-71-5
Min.Order:0
Negotiable
Type:Manufacturers
inquiry1,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 in
Cas:32980-71-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryAnsciep 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
Cas:32980-71-5
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Type:Lab/Research institutions
inquiryAppearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China
Cas:32980-71-5
Min.Order:0
Negotiable
Type:Trading Company
inquiry2,4,6,8-tetrahydroxypyrimidine-[5,4-d]pyrimidine
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
Stage #1: 2,4,6,8-tetrahydroxypyrimidine-[5,4-d]pyrimidine With thionyl chloride In 1,4-dioxane for 1h; Stage #2: With N,N-dimethyl-formamide In 1,4-dioxane for 1.5h; Darkness; | 88.59% |
With phosphorus pentachloride; trichlorophosphate at 145℃; for 25.5h; | 37% |
With chlorine; trichlorophosphate; phosphorus trichloride at 110℃; for 24h; |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With phosphorus pentachloride; trichlorophosphate for 15h; Heating; | 51% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
Stage #1: 1,5-dihydropyrimido[5,4-d]pyrimidine-2,4,6,8-(3H,7H)-tetrone With sodium hydroxide for 0.333333h; Heating; Stage #2: With phosphorus pentachloride; trichlorophosphate for 8h; Heating; | 39% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With phosphorus pentachloride; trichlorophosphate | |
With phosphorus pentachloride; trichlorophosphate |
5-amino-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: aq. ammonium chloride / 1 h / 140 - 210 °C 1.2: 73 percent / aq. NaOH / Heating 2.1: 51 percent / POCl3; PCl5 / 15 h / Heating View Scheme | |
Multi-step reaction with 2 steps 1.1: sodium hydroxide / water / 4 h / 100 °C 2.1: thionyl chloride / 1,4-dioxane / 1 h 2.2: 1.5 h / Darkness View Scheme |
5-aminoorotic acid
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: N-benzyl-N,N,N-triethylammonium chloride; 2,2'-[1,2-ethanediylbis(oxy)]bisethanol / 9 h / 150 - 160 °C 2: phosphorus pentachloride; trichlorophosphate / 25.5 h / 145 °C View Scheme |
6-Methyluracil
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: 2,2'-azobis(isobutyronitrile); cobalt(II) acetate; acetic acid; oxygen / 15 h / 80 °C 2.1: sodium hydroxide / water / 3 h 2.2: 25 - 45 °C / Inert atmosphere 3.1: copper; hydrogenchloride / water / 13 h / 40 °C / Inert atmosphere 4.1: sodium hydroxide / water / 4 h / 100 °C 5.1: thionyl chloride / 1,4-dioxane / 1 h 5.2: 1.5 h / Darkness View Scheme | |
Multi-step reaction with 5 steps 1.1: sodium hydroxide; water; oxygen / 95 °C 2.1: nitric acid; sulfuric acid / 1 h / 10 - 30 °C 3.1: sodium dithionite / water / 0.5 h / 35 °C 4.1: 0.33 h / 100 °C 4.2: 1 h / 90 - 100 °C 4.3: 0.5 h / 60 °C / pH 4 5.1: trichlorophosphate; phosphorus trichloride; chlorine / 24 h / 110 °C View Scheme |
orotic acid
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: sodium hydroxide / water / 3 h 1.2: 25 - 45 °C / Inert atmosphere 2.1: copper; hydrogenchloride / water / 13 h / 40 °C / Inert atmosphere 3.1: sodium hydroxide / water / 4 h / 100 °C 4.1: thionyl chloride / 1,4-dioxane / 1 h 4.2: 1.5 h / Darkness View Scheme |
5-nitroorotic acid
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: copper; hydrogenchloride / water / 13 h / 40 °C / Inert atmosphere 2.1: sodium hydroxide / water / 4 h / 100 °C 3.1: thionyl chloride / 1,4-dioxane / 1 h 3.2: 1.5 h / Darkness View Scheme | |
Multi-step reaction with 3 steps 1.1: sodium dithionite / water / 0.5 h / 35 °C 2.1: 0.33 h / 100 °C 2.2: 1 h / 90 - 100 °C 2.3: 0.5 h / 60 °C / pH 4 3.1: trichlorophosphate; phosphorus trichloride; chlorine / 24 h / 110 °C View Scheme |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With hydrogenchloride In water for 24h; Reflux; | 105 g |
orotic acid sodium salt
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: nitric acid; sulfuric acid / 1 h / 10 - 30 °C 2.1: sodium dithionite / water / 0.5 h / 35 °C 3.1: 0.33 h / 100 °C 3.2: 1 h / 90 - 100 °C 3.3: 0.5 h / 60 °C / pH 4 4.1: trichlorophosphate; phosphorus trichloride; chlorine / 24 h / 110 °C View Scheme |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With phosphorus derivatives In N,N-dimethyl-formamide at 106 - 150℃; for 6h; |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
4-methoxy-benzylamine
4,8-bis(benzylamino)-2,6-dichloropyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 20℃; for 1h; | 98% |
propylamine
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
In tetrahydrofuran at 0 - 20℃; for 1h; | 97% |
In tetrahydrofuran at 0 - 5℃; for 0.333333h; |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
propan-1-ol-3-amine
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at -78 - 20℃; for 0.5h; | 97% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
methylamine
2,6-dichloro-N4,N8-dimethyl-pyrimido[5,4-d]pyrimidine-4,8-diamine
Conditions | Yield |
---|---|
In tetrahydrofuran at 0 - 20℃; for 2h; | 96% |
In tetrahydrofuran at 0 - 5℃; for 0.333333h; | |
In tetrahydrofuran at 0 - 20℃; for 1h; Concentration; Temperature; |
piperidine
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
2,6-dichloro-4,8-bis(piperidin-1-yl)pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With copper(l) iodide; caesium carbonate In nitrobenzene at 180℃; for 16h; Inert atmosphere; | 95% |
In tetrahydrofuran at 25℃; | 93% |
Substitution; | |
In tetrahydrofuran at 0 - 5℃; for 0.333333h; | |
In tetrachloromethane; acetone at 30℃; for 1h; |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
benzylamine
4,8-bis(benzylamino)-2,6-dichloropyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 25℃; | 93% |
With potassium carbonate In tetrahydrofuran at 25℃; for 0.333333h; | 69% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
4-methoxy-benzylamine
2,6-dichloro-4,8-di-(4'-methoxybenzylamino)pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 25℃; | 93% |
propylamine
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at -78℃; for 0.833333h; | 93% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
ethylamine
Conditions | Yield |
---|---|
In tetrahydrofuran at 0 - 20℃; for 2h; | 92% |
In tetrahydrofuran at 0 - 20℃; for 1h; | 88% |
In tetrahydrofuran at 0 - 5℃; for 0.333333h; |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
1-Amino-2-methyl-propan-2-ol
Conditions | Yield |
---|---|
Stage #1: 2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine; 1-Amino-2-methyl-propan-2-ol In tetrahydrofuran at -78℃; for 0.5h; Stage #2: With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at -78℃; for 0.5h; | 92% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
1-amino-2-propene
Conditions | Yield |
---|---|
In tetrahydrofuran at 0 - 20℃; for 2h; | 91% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With water In tetrahydrofuran at 20℃; for 24h; | 91% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
ethanolamine
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at -78℃; for 2h; | 88% |
n-Octylamine
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
2,6-dichloro-4,8-bis(N-octylamino)pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
In chloroform for 0.5h; cooling; | 87% |
In chloroform at 10℃; for 0.833333h; | 86% |
4-methoxy-N-methylbenzylamine
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
2,6-dichloro-4,8-di-(N-4'-methoxybenzyl-N-methylamino)pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 25℃; | 87% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
dibenzylamine
2,6-dichloro-4,8-bis-(dibenzylamino)pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 25℃; | 87% |
In tetrahydrofuran at 0 - 5℃; for 0.333333h; |
n-Dodecylamine
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
In chloroform at 10℃; | 86% |
In chloroform cooling; | 86% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
3,4-dimethoxybenzylamine
2,6-dichloro-N4,N8-bis(3,4-dimethoxybenzyl)pyrimido[5,4-d]pyrimidine-4,8-diamine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 25℃; | 83% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
p-Trifluoromethylbenzylamine
2,6-dichloro-4,8-di-(4'-trifluoromethylbenzylamino)pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 25℃; | 81% |
Conditions | Yield |
---|---|
With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) In ethanol; water; toluene at 120℃; for 3h; | 77% |
[2-fluoro-4-(methylthio)phenyl]amine
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
Stage #1: [2-fluoro-4-(methylthio)phenyl]amine; 2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine In tetrahydrofuran; water at 0 - 20℃; for 1h; Stage #2: With 3-chloro-benzenecarboperoxoic acid In tetrahydrofuran; dichloromethane; water at 0 - 20℃; | 77% |
N-methylhexanamine
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
In chloroform cooling; | 76% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
cyclopropanemethylamine
Conditions | Yield |
---|---|
In tetrahydrofuran at 0 - 20℃; for 3h; | 76% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
N-benzyl-N-(3,4-dimethoxybenzyl)amine
2,6-dichloro-4,8-di-(N-benzyl-N-3',4'-dimethoxybenzylamino)pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 25℃; | 74% |
With potassium carbonate In tetrahydrofuran at 25℃; for 1h; Substitution; |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
2,2'-iminobis[ethanol]
2,6-dichloro-4,8-bis-(diethanoloamino)pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
In tetrahydrofuran at 25℃; | 74% |
4-cyano-2-fluoroaniline
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
In tetrahydrofuran at 0 - 20℃; for 1h; | 74% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
benzylamine
4-benzylamino-2,6,8-trichloropyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran for 0.166667h; | 72% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
benzyl-methyl-amine
2,6-dichloro-4,8-di-(N-benzyl-N-methylamino)pyrimido[5,4-d]pyrimidine
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran at 25℃; | 72% |
2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine
(R,S)-2,2-dimethyl-1,3-dioxolane-4-methanol
Conditions | Yield |
---|---|
Stage #1: (R,S)-2,2-dimethyl-1,3-dioxolane-4-methanol With sodium hydride In tetrahydrofuran at 50 - 60℃; for 0.166667h; Stage #2: 2,4,6,8-Tetrachloro-pyrimido[5,4-d]pyrimidine In tetrahydrofuran for 0.5h; | 72% |
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