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:98106-17-3
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:98106-17-3
Min.Order:1 Metric Ton
FOB Price: $1.0 / 3.0
Type:Manufacturers
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:98106-17-3
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryShanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu
Cas:98106-17-3
Min.Order:1 Kilogram
FOB Price: $1.0
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
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
Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&
Cas:98106-17-3
Min.Order:0
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:98106-17-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryJ&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
Our Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter
Established in May 2015, TaiChem Ltd. is initially invested by a British research and development company and started by PhDs back from aboard. The company is registered in China Medical City (CMC), Taizhou, Jiangsu Province, and the production site
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 Scientific and so o
Cas:98106-17-3
Min.Order:1 Metric Ton
FOB Price: $1.0
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
Cas:98106-17-3
Min.Order:1 Kilogram
FOB Price: $2.0
Type:Lab/Research institutions
inquiryhigh purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier
Why is SINOWAY:1) Specialized in pharmaceutical and healthcare industrial since 19872) ISO 9001:2015 & SGS audited supplier . 3) Accept various payment terms : T.T 30-60 days.4) We have warehouse in USA with quickly shipment . Application:API
Cas:98106-17-3
Min.Order:0
Negotiable
Type:Trading Company
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
Appearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China
good quality, competitive price, thoughtful after sale serviceAppearance:white powder Storage:Keep it in dry,shady and cool place Package:25kg,50kg,180kg,200kg,250kg,1000kg,customization Application:Pharma;Industry;Agricultural;chemical reaserch Tran
Difloxacin cas 98106-17-3Appearance: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
Our mission is to provide high-quality and innovative products to our customers. By offering a broad range of products, custom synthesis and personalized services, Bide can help scientists speeding up their research in the chemical and pharmaceutical
Cas:98106-17-3
Min.Order:0
Negotiable
Type:Other
inquiry1.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:98106-17-3
Min.Order:10 Milligram
Negotiable
Type:Lab/Research institutions
inquiryDifloxacin Basic information Product Name: Difloxacin Synonyms: -1-piperazinyl)-4-oxo-;3-quinolinecarboxylicacid,1,4-dihydro-6-fluoro-1-(4-fluorophenyl)-7-(4-me
Cas:98106-17-3
Min.Order:15 Gram
Negotiable
Type:Trading Company
inquiryOur advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery
Cas:98106-17-3
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryFor quick quotation, please send us the inquiry include CAS#, Structure, Chemical Name, quantity, purity, as well as any additional specifications you require, we will try to get back to you within 24 hours. Our Services Besides manufacturing,
Changsha EASCHEM is a leading company in marketing ang distributing chemicals and new materials with establishment in 2013 by reregistering from Easchem International from China. We, EASCHEM, are the brand with the aim for erecting up Big Chemica
Cas:98106-17-3
Min.Order:0 Gram
FOB Price: $12.0 / 50.0
Type:Lab/Research institutions
inquiryHangzhou KieRaychem Co.,Ltd.is located in Yuhang District of Hangzhou City and specialized in the chemical product customization, development, sales, import and export. Current business is focused on fine chemicals, pharmaceutical materials and int
Aopharm is specialized in APIs, pharmaceutical intermediates & fine chemicals. 1. The best quality, competitive price. 2. The best service before or after shipment. 3. Rich experience in export operation. 4. Rich experience in modes of
Cas:98106-17-3
Min.Order:0 Metric Ton
Negotiable
Type:Trading Company
inquiry1-methyl-piperazine
7-Chloro-6-fluoro-1-(4-fluorophenyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid
difloxacin
Conditions | Yield |
---|---|
In various solvent(s) at 110℃; for 24h; | 21.3 g |
1-methyl-piperazine
ethyl 2,4,5-trifluorobenzoylacetate
N,N-dimethyl-formamide dimethyl acetal
4-fluoroaniline
difloxacin
Conditions | Yield |
---|---|
Yield given. Multistep reaction; |
1-methyl-piperazine
7-Chloro-6-fluoro-1-(4-fluorophenyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid
A
difloxacin
Conditions | Yield |
---|---|
In dimethylsulfoxide-d6 at 120 - 130℃; | A 84 % Spectr. B 16 % Spectr. |
1-methyl-piperazine
A
difloxacin
Conditions | Yield |
---|---|
With sodium hydroxide 1.) DMSO, 110 deg C, 2 h; 2.) reflux, 1 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
2,4-dichloro-5-fluoroacetophenone
difloxacin
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 80 percent / NaH / 1.5 h / 80 °C 2: Ac2O / 2 h / 130 °C 3: CH2Cl2 / 0.5 h / Ambient temperature 4: NaH / 1,2-dimethoxy-ethane / 3 h / 80 °C 5: aq. NaOH / tetrahydrofuran / 1.5 h / 80 °C 6: 21.3 g / various solvent(s) / 24 h / 110 °C View Scheme |
ethyl 2,4-dichloro-5-fluoro-benzoyl-acetate
difloxacin
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: Ac2O / 2 h / 130 °C 2: CH2Cl2 / 0.5 h / Ambient temperature 3: NaH / 1,2-dimethoxy-ethane / 3 h / 80 °C 4: aq. NaOH / tetrahydrofuran / 1.5 h / 80 °C 5: 21.3 g / various solvent(s) / 24 h / 110 °C View Scheme |
1-(4'-fluoro-phenyl)-6-fluoro-7-chloro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid ethyl ester
difloxacin
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: aq. NaOH / tetrahydrofuran / 1.5 h / 80 °C 2: 21.3 g / various solvent(s) / 24 h / 110 °C View Scheme |
ethyl 2,4-dichloro-5-fluoro-α-[[(4-fluorophenyl)amino]methylene]-β-oxobenzenepropanoate
difloxacin
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: NaH / 1,2-dimethoxy-ethane / 3 h / 80 °C 2: aq. NaOH / tetrahydrofuran / 1.5 h / 80 °C 3: 21.3 g / various solvent(s) / 24 h / 110 °C View Scheme |
2,4-dichloro-alpha(elhoxymethlene)-5-fluoro-beta-oxo-benzene propanoic acid ethyl ester
difloxacin
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: CH2Cl2 / 0.5 h / Ambient temperature 2: NaH / 1,2-dimethoxy-ethane / 3 h / 80 °C 3: aq. NaOH / tetrahydrofuran / 1.5 h / 80 °C 4: 21.3 g / various solvent(s) / 24 h / 110 °C View Scheme |
1-methyl-piperazine
6,7-difluoro-1-(4-fluorophenyl)-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid
difloxacin
Conditions | Yield |
---|---|
With triethylamine In acetonitrile Inert atmosphere; Reflux; |
ethyl 2,4,5-trifluorobenzoylacetate
difloxacin
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: acetic anhydride / Heating 2: dichloromethane / Inert atmosphere 3: sodium hydride / tetrahydrofuran; mineral oil / Inert atmosphere; Heating 4: hydrogenchloride; water; acetic acid / Reflux 5: triethylamine / acetonitrile / Inert atmosphere; Reflux View Scheme |
α-(ethoxymethylene)-2,4,5-trifluoro-β-oxobenzenepropanoic acid, ethyl ester
difloxacin
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: dichloromethane / Inert atmosphere 2: sodium hydride / tetrahydrofuran; mineral oil / Inert atmosphere; Heating 3: hydrogenchloride; water; acetic acid / Reflux 4: triethylamine / acetonitrile / Inert atmosphere; Reflux View Scheme |
1-(p-fluorophenyl)-6,7-difluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid ethyl ester
difloxacin
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: hydrogenchloride; water; acetic acid / Reflux 2: triethylamine / acetonitrile / Inert atmosphere; Reflux View Scheme |
ethyl 3-(4-fuoroanilino)-2-(2,4,5-trifuorobenzoyl)acrylate
difloxacin
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: sodium hydride / tetrahydrofuran; mineral oil / Inert atmosphere; Heating 2: hydrogenchloride; water; acetic acid / Reflux 3: triethylamine / acetonitrile / Inert atmosphere; Reflux View Scheme |
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