As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch
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
Hebei yanxi chemical co., LTD is a professional research, development and production Cyromazine、lead diacetate trihydrate /Lead acetate trihydrateC、 2-phenylacetamide 、 4-Aminophenyl-1-phenethylpiperidine 、Citric acid monohydrate 、 Citric acid/c
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
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
Cas:630-10-4
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryR & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates
high qualityAppearance:white crystalline powder Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
Cas:630-10-4
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inquiry1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.
Product Description Description & Specification Category Pharmaceutical Raw Materials, Fine Chemicals, Bulk drug Standard Medical standard
Cas:630-10-4
Min.Order:1 Kilogram
FOB Price: $112.0
Type:Trading Company
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
630-10-4 SELENOUREA Package:According to customer requirement packaging Application:N/A Transportation:By express (Door to door) such as FEDEX, DHL, EMS for small amount. By air(airport to airport) or by sea LCL/FCL for large amount.
Hebei ruishun trade co.,ltd, registered capital one million,have a production of pharmaceutical raw materials, pharmaceutical raw materials factory reagent r&d center,seek development by credit reputation.our products have a large price advanta
We promise our customer following items s 1.Reasonable pre price: We provide high quality products with competitive price in china, , 2.Low moq moq: No worry about the low moq, our moq is 1 gram or lower. . 3
Cas:630-10-4
Min.Order:1 Kilogram
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Type:Trading Company
inquiryHuBei ipure is a diversified product production and operation enterprise, with API, pharma intermediates, and other fine chemicals as well as R&D and pigments development and sales as one of the large enterprises, with more than 130 acres of
At Share Chemical Company, we scrupulously abide by our policy of “Excellent Quality at a Reasonable Price”. We strive to satisfy all of our customers by providing the finest quality products supported by the finest in customer servi
Joyinchem have been committed to chemical supply for several years and have built good cooperation records with multinational chemical corporations and importers from all over the world. Our services include:-Spot goods-Contract manufacturing-Custom
1.High Quality Specialty Chemicals2.Expertise and Experience in Manufacturing High Purity, High Quality Chemicals3.Long Term Focus in Inorganics, Organometallics and Metals4.ISO 9001 CertifiedAppearance:pink solid
630-10-4 SELENOUREA Package:According to customer requirement packaging Application:N/A Transportation:Shippoing
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Do best quality products, erect the morality model Application:please email us, thanks
Debyesci is here who supplied several kinds of chemical products to global pharmaceutical, drug discovery, agrochemical and biotechnology industries for four yearsOur key scientific leadership team has gained experience in top research and developmen
CFTC?PharmaChem?is?a?service?based?company?in?China,?a?pharmachem?division?of?Changzhou?Foreign?Trade?Corp.,supplying?raw?materials,?intermediates,?APIs?and?fine?chemicals?for?the?pharmaceutical?and?specialty?chemical?industries?worldwide. Applicatio
Conditions | Yield |
---|---|
With phosphorus selenide; water In ethanol Heating; | 37% |
With phosphorus selenide; water for 1h; Heating; | 37% |
With hydrogen selenide In water at 24.9℃; Rate constant; Kinetics; Mechanism; var. temperatures; |
Conditions | Yield |
---|---|
With sodium hydrogen selenide In ethanol |
dicarbamimidoyl-diselane; hydrochloride
A
hydrogenchloride
B
CYANAMID
C
selenourea
selenourea
Conditions | Yield |
---|---|
With hydroxide In water Equilibrium constant; Further Variations:; Reagents; |
Conditions | Yield |
---|---|
In diethyl ether accelerated with NH3; | |
In water little higher temp.; | |
In water little higher temp.; |
Conditions | Yield |
---|---|
Stage #1: selenium With sodium tetrahydroborate In ethanol for 0.5h; Cooling with ice; Stage #2: carbamimidothioic acid methyl ester With sodium carbonate In ethanol at 20℃; for 22h; Reflux; | 30.1 g |
selenourea
4-(bromomethyl)benzoic acid 1,1-dimethylethyl ester
Conditions | Yield |
---|---|
In ethanol at 65℃; for 7h; Substitution; | 100% |
selenourea
divinyl selenide
Conditions | Yield |
---|---|
With hydrogenchloride In ethanol; water at 50 - 56℃; | 100% |
Conditions | Yield |
---|---|
In ethanol for 2h; Reflux; Inert atmosphere; Schlenk technique; | 100% |
selenourea
3-(2-bromoacetyl)-6-chloro-2H-chromen-2-one
Conditions | Yield |
---|---|
In water at 25℃; for 0.0138889h; Sonication; Green chemistry; | 99% |
Conditions | Yield |
---|---|
With 1-butyl-3-methylimidazolium Tetrafluoroborate for 0.1h; Microwave irradiation; | 98% |
With sodium fluoride In methanol; water at 20℃; | 98% |
copper dipyridine dichloride at 20℃; for 0.333333h; | 96% |
Conditions | Yield |
---|---|
With sodium fluoride In methanol; water at 20℃; | 98% |
With 1-butyl-3-methylimidazolium Tetrafluoroborate for 0.0833333h; Microwave irradiation; | 96% |
copper dipyridine dichloride at 20℃; for 0.3h; | 95% |
Conditions | Yield |
---|---|
With sodium fluoride In methanol; water at 20℃; | 98% |
In water at 25℃; for 0.00694444h; Sonication; Green chemistry; | 97% |
With 1-butyl-3-methylimidazolium Tetrafluoroborate for 0.0666667h; Microwave irradiation; | 95% |
selenourea
3-bromoacetylcoumarin
3-(2-amino-1,3-selenazol-4-yl)-2H-chromen-2-one
Conditions | Yield |
---|---|
With sodium fluoride In methanol; water at 20℃; | 98% |
copper dipyridine dichloride at 20℃; for 0.416667h; | 96% |
In water at 25℃; for 0.0111111h; Sonication; Green chemistry; | 96% |
Conditions | Yield |
---|---|
With copper(II) oxide; potassium hydroxide In dimethyl sulfoxide at 80℃; for 10h; | 98% |
Conditions | Yield |
---|---|
With copper(II) oxide; potassium hydroxide In dimethyl sulfoxide at 80℃; for 10h; | 98% |
Conditions | Yield |
---|---|
In water for 0.166667h; Sonication; | 98% |
Heating; Green chemistry; | 60% |
Conditions | Yield |
---|---|
With sodium fluoride In methanol; water at 20℃; | 97% |
In water at 25℃; for 0.00277778h; Sonication; Green chemistry; | 97% |
copper dipyridine dichloride at 20℃; for 0.333333h; | 95% |
Conditions | Yield |
---|---|
With 1-butyl-3-methylimidazolium Tetrafluoroborate for 0.0666667h; Microwave irradiation; | 97% |
With sodium fluoride In methanol; water at 20℃; | 97% |
In water at 25℃; for 0.00555556h; Sonication; Green chemistry; | 97% |
With β‐cyclodextrin In water; acetone at 50℃; for 0.833333h; | 93% |
copper dipyridine dichloride at 20℃; for 0.333333h; | 92% |
Conditions | Yield |
---|---|
In water at 25℃; for 0.00277778h; Sonication; Green chemistry; | 97% |
With 1-butyl-3-methylimidazolium Tetrafluoroborate for 0.1h; Microwave irradiation; | 96% |
With β‐cyclodextrin In water; acetone at 50℃; for 0.666667h; | 95% |
selenourea
ethyl 3-oxo-3-phenylpropionate
ethyl 2-amino-4-phenylselenazole-5-carboxylate
Conditions | Yield |
---|---|
With N-Bromosuccinimide; xanthan sulfuric acid at 20℃; for 0.25h; | 97% |
With N-Bromosuccinimide; β‐cyclodextrin In water; acetone at 50℃; for 1.3h; | 94% |
selenourea
ethyl 4-methyl-3-oxo-pentanoate
ethyl 2-amino-4-isopropylselenazole-5-carboxylate
Conditions | Yield |
---|---|
With N-Bromosuccinimide; xanthan sulfuric acid at 20℃; for 0.25h; | 97% |
With N-Bromosuccinimide; β‐cyclodextrin In water; acetone at 50℃; for 2h; | 90% |
(triphenylphosphine)gold(I) chloride
selenourea
((triphenylphosphine)selenourea)gold(I) chloride*0.5(acetonitrile)
Conditions | Yield |
---|---|
In acetone (N2); soln. of Au-compound in acetone added to SeC(NH2)2 in acetone with stirring; stirred for 1 h; evapn. to dryness; recrystn. from CH3CN/CH3OH at 70°C; elem. anal.; | 97% |
selenourea
3-(2-bromoacetyl)-6-methoxy-2H-benzopyran-2-one
Conditions | Yield |
---|---|
In water at 25℃; for 0.0111111h; Sonication; Green chemistry; | 97% |
Conditions | Yield |
---|---|
In water for 0.166667h; Sonication; | 97% |
Heating; Green chemistry; | 42% |
Conditions | Yield |
---|---|
With N-Bromosuccinimide; xanthan sulfuric acid at 20℃; for 0.25h; | 96% |
With N-Bromosuccinimide; β‐cyclodextrin In water; acetone at 50℃; for 1.5h; | 92% |
With iodine |
Conditions | Yield |
---|---|
With 1-butyl-3-methylimidazolium Tetrafluoroborate for 0.0666667h; Microwave irradiation; | 96% |
With β‐cyclodextrin In water; acetone at 50℃; for 1h; | 86% |
In ethanol for 0.166667h; Reflux; Inert atmosphere; | 32% |
With water |
tetra-O-benzyl glucopyranosyl chloride
selenourea
Conditions | Yield |
---|---|
In acetone at 60℃; for 6h; | 96% |
Conditions | Yield |
---|---|
With 1-butyl-3-methylimidazolium Tetrafluoroborate for 0.1h; Microwave irradiation; | 96% |
With β‐cyclodextrin In water; acetone at 50℃; for 0.75h; | 91% |
In ethanol for 0.5h; Heating; | 68% |
selenourea
6,8-dibromo-3-(2-bromoacetyl)-2H-chromen-2-one
3-(2-amino-1,3-selenazol-4-yl)-6,8-dibromo-2H-chromen-2-one
Conditions | Yield |
---|---|
copper dipyridine dichloride at 20℃; for 0.383333h; | 96% |
In water at 25℃; for 0.0166667h; Sonication; Green chemistry; | 94% |
selenourea
ethyl 2-bromoacetoacetate
Conditions | Yield |
---|---|
With 1-butyl-3-methylimidazolium Tetrafluoroborate for 0.0666667h; Microwave irradiation; | 95% |
With β‐cyclodextrin In water; acetone at 50℃; for 0.916667h; | 87% |
With acetone; β‐cyclodextrin In water at 50℃; for 1h; Inert atmosphere; |
selenourea
2-bromo-1-(4-iodophenyl)ethanone
Conditions | Yield |
---|---|
With 1-butyl-3-methylimidazolium Tetrafluoroborate for 0.1h; Microwave irradiation; | 95% |
copper dipyridine dichloride at 20℃; for 0.333333h; | 92% |
With β‐cyclodextrin In water; acetone at 50℃; for 0.833333h; | 90% |
selenourea
4-methyl-3-oxopentanoic acid benzyl ester
benzyl 2-amino-4-isopropylselenazole-5-carboxylate
Conditions | Yield |
---|---|
With N-Bromosuccinimide; xanthan sulfuric acid at 20℃; for 0.25h; | 95% |
With N-Bromosuccinimide; β‐cyclodextrin In water; acetone at 50℃; for 2h; | 93% |
(dimethylphenylphosphine)gold(I) chloride
selenourea
(CH3)2C6H5PAuSeC(NH2)2(1+)*Cl(1-)={(CH3)2C6H5PAuSeC(NH2)2}Cl
Conditions | Yield |
---|---|
In acetone under dry N2; the soln. of the phosphine complex is added to the stirred soln. of selenourea; sepn. of the ppt., recrystn. from refluxing CH3CN/CH3OH, elem. anal.; | 95% |
selenourea
3-(2-amino-1,3-selenazol-4-yl)-8-bromo-2H-chromen-2-one
Conditions | Yield |
---|---|
copper dipyridine dichloride at 20℃; for 0.333333h; | 95% |
Conditions | Yield |
---|---|
With copper(II) oxide; potassium hydroxide In dimethyl sulfoxide at 80℃; for 10h; | 95% |
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