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
Cas:110-21-4
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
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:110-21-4
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:110-21-4
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
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
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:110-21-4
Min.Order:1 Kilogram
FOB Price: $1.0 / 10.0
Type:Trading Company
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:110-21-4
Min.Order:1 Kilogram
FOB Price: $1111.0
Type:Lab/Research institutions
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:110-21-4
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W
Cas:110-21-4
Min.Order:1 Kilogram
FOB Price: $289.0 / 499.0
Type:Trading Company
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:110-21-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryBIUREA CAS:110-21-4 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 intermediates, stero
Hello, 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:110-21-4
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
Cas:110-21-4
Min.Order:0
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
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:110-21-4
Min.Order:0
Negotiable
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:110-21-4
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryThe 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 providing h
Our 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
factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B
Cas:110-21-4
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
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
Cas:110-21-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryHangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu
1.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:110-21-4
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
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:This product can be use
GOLDEN 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
We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp
Cas:110-21-4
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Trading Company
inquiry1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification
Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
Cas:110-21-4
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 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
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:Beijing or Guangzhou
best seller Application:API
Conditions | Yield |
---|---|
With hydrazine hydrate In acetonitrile at 20℃; for 1.5h; | 98% |
With hydrogen sulfide; water beim Kochen; | |
With hydrogenchloride beim Kochen; | |
With water; sodium carbonate beim Kochen; |
hydrazodicarboxamide
Conditions | Yield |
---|---|
With ammonia; aluminum (III) chloride; zinc(II) chloride In water at 10 - 60℃; for 1h; | 97% |
With ammonia; aluminum (III) chloride; zinc(II) chloride In water at 10 - 60℃; for 1h; | 96% |
With ammonia; cadmium(II) chloride; zinc(II) chloride In water at 10 - 60℃; for 1h; | 96% |
Conditions | Yield |
---|---|
Stage #1: BIURET With sodium hypochlorite In water at 5 - 10℃; Stage #2: With ammonia; zinc(II) chloride In water at 100℃; for 0.5h; Product distribution / selectivity; | 96% |
Stage #1: BIURET With sodium hypochlorite In water at 5 - 10℃; Stage #2: With ammonia In water at 100℃; for 0.5h; Product distribution / selectivity; | 95% |
Stage #1: BIURET With sodium hypochlorite In ethanol; water at 5 - 10℃; Stage #2: With ammonia In ethanol; water at 100℃; for 0.5h; Product distribution / selectivity; | 85% |
hydrazodicarboxamide
Conditions | Yield |
---|---|
With ammonia; zinc(II) chloride In water at 10 - 100℃; for 0.5h; Product distribution / selectivity; | 93% |
With ammonia; hydrogenchloride In water at 10 - 100℃; for 0.5h; Product distribution / selectivity; | 92% |
With ammonia; nickel diacetate In water at 10 - 100℃; for 0.5h; Product distribution / selectivity; | 92% |
With ammonia In water at 10 - 100℃; for 0.5h; Product distribution / selectivity; | 87% |
(E)-2-(3,4,5-trimethoxybenzylidene)hydrazine carboxamide
A
hydrazodicarboxamide
B
(1E, 2E)-1,2-bis(3,4,5-trimethoxybenzylidene)hydrazine
Conditions | Yield |
---|---|
In tetrahydrofuran at 120 - 150℃; Rearrangement; elimination; | A n/a B 87% |
A
hydrazodicarboxamide
B
benzaldehyde benzylidenehydrazone
Conditions | Yield |
---|---|
In tetrahydrofuran at 120 - 150℃; Rearrangement; elimination; | A n/a B 85% |
3,4-methylenedioxybenzaldehyde semicarbazone
A
hydrazodicarboxamide
Conditions | Yield |
---|---|
In tetrahydrofuran at 120 - 150℃; Rearrangement; elimination; | A n/a B 84% |
(E)-2-(4-methoxybenzylidene)hydrazine carboxamide
A
hydrazodicarboxamide
B
N,N'-Bis-[1-(4-methoxy-phenyl)-meth-(E)-ylidene]-hydrazine
Conditions | Yield |
---|---|
In tetrahydrofuran at 120 - 150℃; Rearrangement; elimination; | A n/a B 83% |
A
hydrazodicarboxamide
B
(1E,2E)-1,2-bis(3,4-dimethoxybenzylidene)hydrazine
Conditions | Yield |
---|---|
In tetrahydrofuran at 120 - 150℃; Rearrangement; elimination; | A n/a B 68% |
N-acetoacetylphenylhydroxyloamine
A
hydrazodicarboxamide
B
N-Phenylhydroxylamine
C
1-carbamido-3-methyl-2-pyrazolin-5-one
D
azoxybenzene
Conditions | Yield |
---|---|
With semicarbazide hydrochloride; sodium carbonate In ethanol for 24h; Ambient temperature; Further byproducts given; | A 63% B 35% C 15.5% D 30% |
triethyl 1,3,5-triazine-2,4,6-tricarboxylate
hydrazine carboxamide
A
hydrazodicarboxamide
B
Ethyloxamatcarbamylhydrazon
C
3-oxo-5-imino-6-ethoxycarbonyl-2,3,4,5-tetrahydro-1,2,4-triazine
D
3,5-diethoxycarbonyl-1,2,4-triazole
Conditions | Yield |
---|---|
In ethanol for 1h; Heating; | A 34% B 63% C 51% D 23% |
triethyl 1,3,5-triazine-2,4,6-tricarboxylate
A
hydrazodicarboxamide
B
Ethyloxamatcarbamylhydrazon
C
3-oxo-5-imino-6-ethoxycarbonyl-2,3,4,5-tetrahydro-1,2,4-triazine
D
3,5-diethoxycarbonyl-1,2,4-triazole
Conditions | Yield |
---|---|
With hydrazine carboxamide In ethanol for 1h; Heating; | A 34% B 63% C 51% D 23% |
Conditions | Yield |
---|---|
With hydrazine In hexane at 60℃; for 6h; | 62% |
semicarbazide hydrochloride
4-chloro-3-(1-chlorovinyl)-6-methyl-2-pyrone
A
hydrazodicarboxamide
B
3,6-dimethylpyrano<4,3-c>pyrazol-4(1H)-one
Conditions | Yield |
---|---|
With sodium acetate In ethanol for 21h; Heating; | A n/a B 49% |
Conditions | Yield |
---|---|
With ethyl acetoacetate In water a) from 5 deg C to 10 deg C, 15 min, b) reflux, 3 h; | 37% |
With water; sodium carbonate | |
With selenium(IV) oxide; water at 60℃; |
Conditions | Yield |
---|---|
In water for 0.75h; Heating; | 26% |
Conditions | Yield |
---|---|
beim Erhitzen; |
Conditions | Yield |
---|---|
at 240℃; | |
at 240℃; |
Conditions | Yield |
---|---|
With water; hydrazinium sulfate |
Conditions | Yield |
---|---|
With ethanol; water; potassium acetate |
carbamoyl azide
hydrazodicarboxamide
Conditions | Yield |
---|---|
at 110 - 120℃; und Kochen der Reaktionsprodukte mit Wasser; | |
With benzene at 100 - 115℃; und Kochen der Reaktionsprodukte mit Wasser; |
butan-2-one semicarbazone
A
urazole
B
hydrazodicarboxamide
C
butan-2-one azine
Conditions | Yield |
---|---|
beim Destillieren; |
Conditions | Yield |
---|---|
beim Erhitzen; |
ethanol
1-chloro-propan-2-one semicarbazone
A
hydroxy-acetone semicarbazone
B
hydrazodicarboxamide
Conditions | Yield |
---|---|
With acetic acid; copper(I) bromide at 20℃; under 760.051 Torr; for 12h; Reagent/catalyst; Temperature; Sealed tube; | 99% |
With tetra-N-butylammonium tribromide; sodium nitrite In 1,2-dimethoxyethane; water at 65℃; under 760.051 Torr; for 20h; Reagent/catalyst; Solvent; Pressure; Temperature; Sealed tube; | 98% |
With hydrogenchloride; iron(III) chloride; dihydrogen peroxide; ozone In water at 40℃; pH=2 - 5; Temperature; | 97.4% |
Conditions | Yield |
---|---|
With pyridine; p-toluenesulfonyl chloride In ethanol at 79 - 80℃; for 20h; Reagent/catalyst; Solvent; Temperature; Inert atmosphere; | 98% |
hydrazodicarboxamide
1-aminooctadecane
4-octadecyl-[1,2,4]triazolidine-3,5-dione
Conditions | Yield |
---|---|
In 1-methyl-pyrrolidin-2-one | 90% |
Conditions | Yield |
---|---|
With hydrogenchloride; sodium chloride In water at 320℃; for 0.216667h; | 89.9% |
Conditions | Yield |
---|---|
In water; acetone | 89% |
hexan-1-amine
hydrazodicarboxamide
4-hexyl-[1,2,4]triazolidine-3,5-dione
Conditions | Yield |
---|---|
With sodium hydroxide In N-methy pyrrolidone | 81% |
In 1-methyl-pyrrolidin-2-one | 81% |
hydrazodicarboxamide
4,4'-diaminodicyclohexylmethane
4,4'-bis-(1,2,4-triazolidine-3,5-dion-4-yl)-dicyclohexylmethane
Conditions | Yield |
---|---|
In 1-methyl-pyrrolidin-2-one; water | 75% |
hydrazodicarboxamide
Conditions | Yield |
---|---|
With pyridine; p-toluenesulfonyl chloride In N,N-dimethyl-formamide at 140℃; for 5h; Inert atmosphere; | 75% |
Conditions | Yield |
---|---|
With sodium hydroxide In 1-methyl-pyrrolidin-2-one | 70% |
In 1-methyl-pyrrolidin-2-one | 70% |
Conditions | Yield |
---|---|
With sodium hydroxide; sulfuric acid In water ice cooling; distn. with H2SO4; | A n/a B n/a C 9% |
With NaOH; H2SO4 In water ice cooling; distn. with H2SO4; | A n/a B n/a C 9% |
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