hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm
Cas:50-71-5
Min.Order:1 Metric Ton
FOB Price: $1.0 / 3.0
Type:Manufacturers
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
Our 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
Cas:50-71-5
Min.Order:1 Kilogram
FOB Price: $15.0 / 50.0
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:50-71-5
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
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:50-71-5
Min.Order:1 Kilogram
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:50-71-5
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
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
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
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
Cas:50-71-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquirysuperior quality Appearance:white crystalline powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Used as Pharmaceutical Intermediates Transpor
Cas:50-71-5
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryAlloxan Basic information Product Name: Alloxan Synonyms: ALLOXAN;2,4,5,6(1H,3H)-PYRIMIDINETETRONE;MESOXALYLUREA;MESOXALYLCARBAMIDE;,4,5,6-Pyrimi
Cas:50-71-5
Min.Order:1 Metric Ton
Negotiable
Type:Lab/Research institutions
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 produc
Cas:50-71-5
Min.Order:1 Kilogram
FOB Price: $3.0 / 54.0
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:50-71-5
Min.Order:1 Metric Ton
FOB Price: $7.0 / 8.0
Type:Trading Company
inquiryProduct name: urea. Synonym:Pyrimidine-2,4,5,6(1H,3H)-tetraone;alloxan:2,4,5,6(1h,3h)-pyrimidinetetraone;Pyrimidine-2,4,5,6(1H,3H)-tetraonemonohydrate;ALChemicalbookLOXAN;2,4,5,6(1H,3H)-PYRIMIDINETETRONE;MESOXALYLUREA;MESOXALYLCARBAMIDE;,4,5,6-Py
Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
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 stock Package:1kg Application:pharmaceutical intermediates
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
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
Cas:50-71-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryWe are committed to providing our customers with the best products and services at the most competitive prices.Appearance:crystalline powder Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use as pri
Supply top quality products with a reasonable price Application:api
Alloxan cas 50-71-5Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:any port in China
high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:any port in China
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
in store Package:5g Application:Organic Chemicals
1.Professional synthesis laboratory and production base. 2.Strong synthesis team and service team. 3.Professional data management system. 4.We provide the professional test date and product information ,ex. HNMR ,CNMR,FNMR, HPLC/G
Cas:50-71-5
Min.Order:10 Milligram
Negotiable
Type:Lab/Research institutions
inquiryConditions | Yield |
---|---|
With chromium(VI) oxide In acetic acid |
Conditions | Yield |
---|---|
With acetic acid at 20℃; for 24h; | 92% |
1,2-diamino-benzene
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
alloxazine
Conditions | Yield |
---|---|
With boric acid In acetic acid at 60℃; for 15h; Inert atmosphere; | 86% |
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
With boron trioxide; acetic acid at 20℃; for 18h; | 82% |
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
With boron trioxide; acetic acid at 20℃; for 14h; | 78% |
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
With boric acid In acetic acid at 60℃; for 15h; Inert atmosphere; | 75% |
2,3-Diaminonaphthalene
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
naphtho[2,3-g]pteridine-2,4(1H,3H)-dione
Conditions | Yield |
---|---|
With boric acid In acetic acid at 60℃; for 15h; Inert atmosphere; | 73% |
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
With water In water gradual addn. of an aq. soln. of CuCl2*2H2O to an aq. soln. of alloxane; simultaneous addn. of 10% aq. NaOH (->pH=7.5); pH=5 or pH=6 for a few hours;; ppt.; washing with cold H2O; drying in vac. at ambient temp. over CaCl2;; | 72% |
With H2O In water gradual addn. of an aq. soln. of CuCl2*2H2O to an aq. soln. of alloxane; simultaneous addn. of 10% aq. NaOH (->pH=7.5); pH=5 or pH=6 for a few hours;; ppt.; washing with cold H2O; drying in vac. at ambient temp. over CaCl2;; | 72% |
Conditions | Yield |
---|---|
With sodium hydroxide In water addition of CoCl2 in H2O to a solution of alloxane in H2O under addition of NaOH-solution until pH=7.5; then pH=5-6; seperation of the ppt. after some hours;; washing the product with cold H2O; drying in vac. at normal temperature over CaCl2;; | 69% |
With NaOH In water |
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
With sodium hydroxide In water gradual addn. of equimolar amt. of aq. Ni(NO3)2*6H2O soln. to aq. soln. of alloxan, addn. of 10% NaOH soln. to pH 7.5, then adjusting to pH 5-6;; pptn., sepg. after several hours, washing with cold H2O, drying in vac. at ambient temp. over CaCl2;; | 66% |
2-amino-4,5-difluoroaniline
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
With boric acid In acetic acid at 60℃; for 15h; Inert atmosphere; | 58% |
Conditions | Yield |
---|---|
With boric acid In acetic acid at 60℃; for 15h; Inert atmosphere; | 57% |
1-(N-octylamino)-2-aminobenzene
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
With boric acid; acetic acid at 60℃; for 1h; | 41% |
N-butyl-4-trifluoromethylbenzene-1,2-diamine
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
With boric acid; acetic acid at 70℃; for 3h; | 39% |
Conditions | Yield |
---|---|
With boric acid; acetic acid at 60℃; for 1h; | 33.7% |
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
2,3-diaminomaleonitrile
2,4-dioxo-1,2,3,4-tetrahydropteridine-6,7-dicarbonitrile
Conditions | Yield |
---|---|
With boric acid In acetic acid at 60℃; for 15h; Inert atmosphere; | 32% |
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
With H2O In water pptn. from alloxane soln. with Hg(NO3)2;; |
5,5-dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione
Conditions | Yield |
---|---|
In water mixing ratio Fe2(SO4)3*9H2O:alloxan = 1:2 at pH=2; evapd. (water bath); sepn. of crystals; dried; elem.anal.; X-ray diffraction; |