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:488-86-8
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryhebei 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:488-86-8
Min.Order:1 Metric Ton
FOB Price: $1.0 / 3.0
Type:Trading Company
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
With 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:488-86-8
Min.Order:1 Kilogram
FOB Price: $3.0 / 10.0
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:488-86-8
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryOur Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We
1.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:488-86-8
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryCROCONIC ACID CAS:488-86-8 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
Cas:488-86-8
Min.Order:1 Gram
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:488-86-8
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:488-86-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquirysuperior quality Appearance:gold-coloured 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 Transportati
Cas:488-86-8
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
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
A 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
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:488-86-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryWhy Choose Us: 1. Factory direct sales, so we can provide the competitive price and high quality product base on 8 years of production and R&D experience. 2. It is available in stock for quick shipment.Products could be packaged according to cu
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:488-86-8
Min.Order:10 Gram
FOB Price: $100.0
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
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
Shandong 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
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
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
Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:488-86-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryWe 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
1, 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
Cas:488-86-8
Min.Order:0
Negotiable
Type:Trading Company
inquiryLower 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:488-86-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
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
Hunan chemfish Pharmaceutical co.,Ltd a comprehensive enterprise, is located in High-Tech Science Park,Changsha,Chia . Specializing in R&D, manufacture and marketing, we provide a wide range of products and the most professional services to meet the
1.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
Our advantage:Our 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 Scient
Conditions | Yield |
---|---|
Stage #1: maleic anhydride With sodium hydroxide; bromine In water at 0 - 20℃; for 1.66667h; Stage #2: With hydrogenchloride In water at 0℃; Product distribution / selectivity; | 88% |
Stage #1: maleic anhydride With water; chlorine; potassium carbonate at 0 - 50℃; for 6h; Stage #2: With hydrogenchloride at 10℃; Product distribution / selectivity; | 66% |
Conditions | Yield |
---|---|
Stage #1: cyclopentene With potassium hydroxide; bromine In water; benzene at 0 - 60℃; for 5h; Stage #2: With hydrogenchloride In water; benzene at 5℃; Product distribution / selectivity; | 83% |
ccyclopentane-1,2,4-trione
croconic acid
Conditions | Yield |
---|---|
Stage #1: ccyclopentane-1,2,4-trione With 1,3-dichloro-5,5-dimethylhydantoin In 1,2-dichloro-ethane at 0℃; for 2h; Stage #2: With sodium hydroxide In water; 1,2-dichloro-ethane at 0 - 50℃; for 4.5h; Stage #3: With hydrogenchloride In water; 1,2-dichloro-ethane at 0℃; Product distribution / selectivity; | 63% |
Conditions | Yield |
---|---|
With nitric acid |
Conditions | Yield |
---|---|
With oxygen In water Rate constant; Quantum yield; Irradiation; various pH; |
Conditions | Yield |
---|---|
With manganese(IV) oxide; potassium carbonate |
Conditions | Yield |
---|---|
Abdampfen an der Luft; |
Conditions | Yield |
---|---|
Abdampfen an der Luft; |
croconic acid
Conditions | Yield |
---|---|
With air; water at 80℃; |
croconic acid
Conditions | Yield |
---|---|
With air; water at 80℃; |
croconic acid
Conditions | Yield |
---|---|
With manganese(IV) oxide; potassium carbonate |
D-myo-inositol
nitric acid
A
benzenehexol
B
croconic acid
C
rhodizonic acid
Conditions | Yield |
---|---|
beim Aufbewahren; |
triaminophloroglucinol hydrogen sulfate
croconic acid
croconic acid
Conditions | Yield |
---|---|
With sulfuric acid In water for 1h; warming; |
Conditions | Yield |
---|---|
In water at 20℃; under 0 Torr; for 8h; Flow reactor; | 99.1% |
croconic acid
malononitrile
1,2,3-tris(dicyanomethylene)-4-cyclopentene-4,5-diol
Conditions | Yield |
---|---|
In water at 85 - 90℃; for 0.25h; | 97% |
croconic acid
Conditions | Yield |
---|---|
In toluene; butan-1-ol at 107℃; for 3h; Inert atmosphere; | 94.8% |
Conditions | Yield |
---|---|
In propan-1-ol; toluene for 2h; Reflux; | 93% |
Conditions | Yield |
---|---|
In toluene; butan-1-ol for 1h; Reflux; | 91% |
croconic acid
Conditions | Yield |
---|---|
In toluene; butan-1-ol at 110℃; for 3h; Dean-Stark; | 87% |
2,3,3-trimethylbenzo[e]indole
croconic acid
Conditions | Yield |
---|---|
In water; acetone at 50℃; for 96h; Solvent; Temperature; | 86% |
Conditions | Yield |
---|---|
With quinoline In ethanol at 80℃; for 24h; | 85% |
Conditions | Yield |
---|---|
With quinoline In ethanol at 80℃; for 24h; | 85% |
Conditions | Yield |
---|---|
In methanol at 60℃; | 85% |
croconic acid
5-bromo-2-methyl-3-octyl-1,3-benzothiazol-3-ium iodide
Conditions | Yield |
---|---|
In water; acetone at 0 - 3℃; for 48h; | 85% |
Conditions | Yield |
---|---|
With NaOH In water byproducts: NaCl, NaBr; NaOH and (C4H9)4NBr added to C5O3(OH)2*3H2O in H2O, FeCl3 added dropwise; extd. (CH2Cl2), anhyd. Na2SO4 added, filtered, evapd. (vac.), crystd. (MeOH/Et2O) for days; elem. anal.; | 83% |
Conditions | Yield |
---|---|
In toluene; butan-1-ol for 1h; Reflux; | 82% |
Conditions | Yield |
---|---|
In toluene; butan-1-ol for 2h; Reflux; | 81% |
5-bromo-2,3,3-trimethyl-3H-indole
croconic acid
Conditions | Yield |
---|---|
In toluene; butan-1-ol at 110℃; for 3h; Dean-Stark; | 80% |
Conditions | Yield |
---|---|
In toluene; butan-1-ol for 1h; Inert atmosphere; Reflux; | 79.9% |
croconic acid
Conditions | Yield |
---|---|
With calcium acetate In water at 180℃; for 2h; | 79% |
Conditions | Yield |
---|---|
In toluene; butan-1-ol for 1h; Inert atmosphere; Reflux; | 79% |
croconic acid
Conditions | Yield |
---|---|
In toluene; butan-1-ol Reflux; | 78% |
croconic acid
1,2-diamino-benzene
2,3-dihydroxy-1H-cyclopenta[b]quinoxalin-1-one
Conditions | Yield |
---|---|
With acetic acid at 40℃; for 2h; Inert atmosphere; | 78% |
Conditions | Yield |
---|---|
In butan-1-ol; benzene Heating; | 76% |
croconic acid
Conditions | Yield |
---|---|
With pyridine In methanol for 3h; Condensation; Heating; | 75% |
croconic acid
C83H108N2O9
Conditions | Yield |
---|---|
With quinoline In ethanol at 80℃; for 24h; | 75% |
Conditions | Yield |
---|---|
In toluene; butan-1-ol for 1h; Inert atmosphere; Reflux; | 74% |
Conditions | Yield |
---|---|
With NaOH In water NaOH and P(C6H5)4Br added to C5O3(OH)2*3H2O in H2O, FeCl3 added dropwise; extd. (CH2Cl2), anhyd. Na2SO4 added, filtered, evapd. (vac.), crystd. (MeOH/Et2O); elem. anal.; | 72% |
croconic acid
Conditions | Yield |
---|---|
In toluene; butan-1-ol at 80℃; for 1h; | 71% |
Conditions | Yield |
---|---|
In toluene; butan-1-ol Heating; | 70% |
Conditions | Yield |
---|---|
In butan-1-ol; benzene Heating; | 70% |
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