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
Cas:26093-31-2
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryWelcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our
Cas:26093-31-2
Min.Order:1 Kilogram
Negotiable
Type:Manufacturers
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 providi
1. 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:26093-31-2
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:26093-31-2
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryOur company was built in 2009 with an ISO certificate.In the past 6 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:26093-31-2
Min.Order:1 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryOur advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva
Cas:26093-31-2
Min.Order:1 Kilogram
FOB Price: $9.0 / 99.0
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:26093-31-2
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:26093-31-2
Min.Order:1 Kilogram
FOB Price: $5.0 / 10.0
Type:Trading Company
inquiryWe can provide GMP validation service that complies with SFDA, FDA, WHO and EU EMPA.Excellent registration team could help us easlily to register our products in different countries.If you and your customer are interested in some products or need CMO
Cas:26093-31-2
Min.Order:1 Gram
Negotiable
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:26093-31-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryProduct Name: Coumarin 120 Synonyms: 7-Amino-4-methyl-2H-chromen-2-one, 7-Amino-4-methyl-2-oxo-2H-chromene, 7-Amino-4-methyl-2-oxo-2H-1-benzopyran;Coumarin 120, AMC;(2S,5R,6R)-6-[(2R)-2-aMino-2-(4-hydroxyphenyl)acetaMido]-3,3-diMethyl-7-oxo-4-t
Coumarin 120 CAS:26093-31-2 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 intermediat
Cas:26093-31-2
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:26093-31-2
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
Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia
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:26093-31-2
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
Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
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Min.Order:1 Milligram
Negotiable
Type:Trading Company
inquiryHigh quality, competitive price, fast delivery and first-class service we possesses have won the trust and praise of customers. Standard: BP/USP/EP The purity is equal or greater than 99%. As a supplier, we can provide high-quality products. Cle
Cas:26093-31-2
Min.Order:1 Metric Ton
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
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
Cas:26093-31-2
Min.Order:1 Metric Ton
FOB Price: $7.0 / 8.0
Type:Trading Company
inquiryLocated in Hangzhou National Hi-Tech Industrial Development Zone, zhongqichem is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals to various industries. Benefiting from the outstanding customer service an
Hangzhou Dingyan Chem is a leading manufacturer and supplier of chemicals in China.We develop,produce and distribute high quality pharmaceuticals, intermediates, special chemicals and other fine chemicals. We could give you: 1.Best quality in yo
Cas:26093-31-2
Min.Order:0 Metric Ton
Negotiable
Type:Lab/Research institutions
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
SAGECHEM 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:26093-31-2
Min.Order:0
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Type:Lab/Research institutions
inquiryHigh purity, high success rate, short cycle and moderate priceAppearance:White powder solid Storage:Negative 20 degrees Celsius Package:5mg, 10mg 100mg, 1gram Application:Applied to various scientific research
Cas:26093-31-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryConditions | Yield |
---|---|
With zirconium(IV) phosphate at 110℃; for 0.166667h; Pechmann condensation; Microwave irradiation; chemoselective reaction; | 100% |
With silica gel supported zirconyl chloride octahydrate at 90℃; for 0.583333h; Pechmann condensation reaction; | 98% |
With tetrakis(actonitrile)copper(I) hexafluorophosphate at 25℃; for 0.166667h; Pechmann condensation; neat (no solvent); | 98% |
(4-methyl-2-oxo-2H-1-benzopyran-7-yl)carbamic acid ethyl ester
7-amino-4-methylcoumarin.
Conditions | Yield |
---|---|
With sulfuric acid In acetic acid at 120℃; for 4h; Reflux; | 99% |
With sulfuric acid; acetic acid for 5h; Reflux; | 88% |
With sulfuric acid In acetic acid for 3h; Heating; | 82% |
acetoacetic acid methyl ester
m-Hydroxyaniline
7-amino-4-methylcoumarin.
Conditions | Yield |
---|---|
In neat (no solvent) at 20℃; for 0.45h; Catalytic behavior; Reagent/catalyst; Pechmann Condensation; Milling; Green chemistry; | 95% |
7-amino-4-methylcoumarin.
Conditions | Yield |
---|---|
Stage #1: 7-azido-4-methyl-2H-chromen-2-one With 9-phenyl-9-phosphafluorene; phenylsilane In 1,4-dioxane at 101℃; for 16h; Staudinger reduction reaction; Inert atmosphere; Stage #2: With water In 1,4-dioxane at 20℃; Staudinger reduction reaction; Inert atmosphere; | 93% |
With C27H34ClN2ORu(1+)*Cl(1-); sodium formate In aq. phosphate buffer at 37℃; for 24h; pH=7.4; | 91% |
In cyclohexane Irradiation; | 14% |
methyl N-(4-methyl-2-oxo-2H-chromen-7-yl)-carbamate
7-amino-4-methylcoumarin.
Conditions | Yield |
---|---|
With potassium hydroxide at 80 - 90℃; for 0.333333h; | 83% |
With potassium hydroxide In water at 80 - 90℃; | 83% |
With sodium hydroxide | |
With sodium hydroxide | |
With sodium hydroxide |
ethyl acetoacetate
m-Hydroxyaniline
A
7-amino-4-methylcoumarin.
B
7-hydroxy-4-methylquinolin-2(1H)-one
Conditions | Yield |
---|---|
With bismuth(III) chloride at 75℃; for 1h; Pechmann condensation; | A 81% B 9% |
4-bromo-3-hydroxy-aniline
(Z)-ethyl-3-(4,4,5,5)-tetramethyl-1,3,2-dioxaborolan-2-yl)but-2-enoate
7-amino-4-methylcoumarin.
Conditions | Yield |
---|---|
With dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; potassium phosphate; palladium diacetate In N,N-dimethyl-formamide at 80℃; for 16h; Schlenk technique; Sealed tube; | 71% |
7-diethylamino-4-methylcoumarin
A
7-amino-4-methylcoumarin.
B
4-methyl-7-ethylamino-2H-benzopyran-2-one
Conditions | Yield |
---|---|
With acetophenone In acetonitrile for 17h; Irradiation; | A 13% B 60% |
With aluminium trichloride In acetonitrile for 20h; Heating; | A 28 % Turnov. B 38 % Turnov. |
With air In water Quantum yield; Mechanism; Irradiation; other solvent, addition of β-cyclodextrin, addition of a sensitiser (sulphonated aluminium-phthalocyanine); |
ethyl acetoacetate
m-Hydroxyaniline
A
7-amino-4-methylcoumarin.
B
7-hydroxy-4-methylquinolin-2(1H)-one
C
5-hydroxy-4-methyl-2(1H)-quinolinone
Conditions | Yield |
---|---|
at 150℃; for 20h; | A 7% B 55% C 16% |
7-diethylamino-4-methylcoumarin
acrylonitrile
A
7-amino-4-methylcoumarin.
B
7-ethylaminocoumarin
1-endo-cyano-8b-methyl-6-diethylamino-1,2,2a,8b-tetrahydro-3H-cyclobutachromen-3-one
Conditions | Yield |
---|---|
In acetonitrile for 10h; Irradiation; Yields of byproduct given; | A n/a B n/a C 49% |
7-diethylamino-4-methylcoumarin
A
7-amino-4-methylcoumarin.
B
N-(4-methyl-2-oxo-2H-chromen-7-yl)acetamide
C
4-methyl-7-ethylamino-2H-benzopyran-2-one
Conditions | Yield |
---|---|
In ethanol for 16h; Irradiation; Further byproducts given; | A 45% B 7% C 20% D 8% |
A
7-amino-4-methylcoumarin.
B
4-methyl-7-ethylamino-2H-benzopyran-2-one
C
N-(4-methyl-2-oxo-2H-chromen-7-yl)formamide
Conditions | Yield |
---|---|
In ethanol for 16h; Irradiation; Further byproducts given; | A 45% B 20% C 5% D 8% |
7-diethylamino-4-methylcoumarin
A
7-amino-4-methylcoumarin.
B
4-methyl-7-ethylamino-2H-benzopyran-2-one
C
3-nitro-4-methyl-7-diethylamino-2H-benzopyran-2-one
Conditions | Yield |
---|---|
With acetic acid; sodium nitrite at 40 - 50℃; for 8h; Mechanism; Product distribution; other oxidizing agents (one-electron transfer) in other solvents; | A n/a B n/a C 31% |
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