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 according to the contract research and development services for the fine chemicals, ph
Cas:53116-50-0
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Type:Lab/Research institutions
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:53116-50-0
Min.Order:1 Gram
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inquiryGMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
Cas:53116-50-0
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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
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Type:Manufacturers
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inquiryhight degree of purity Application:Fine chemical intermediates, used as the main raw material for he synthesis of various pesticides, medicines, surfactants, polymer monomers, Ond Ontifungal agents
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inquiryAppearance: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
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inquirygood quality, competitive price, thoughtful after sale serviceAppearance:White to Off-White Solid Storage:Keep it in dry,shady and cool place Package:as your requirement Application:Pharma;Industry;Agricultural;chemical reaserch Transportation:by Sea
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inquiryhome-produced Application:medicine
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Type:Lab/Research institutions
inquiryp-Nitrobenzyl 7-phenylacetamino-3-hydroxy-3-cephem-4-carboxylate Application:824248
Cas:53116-50-0
Min.Order:1 Gram
FOB Price: $500.0
Type:Trading Company
inquiryThe company have effective management team, professional technical R & D personnel, the service spirit of customer oriented. We have long-term cooperation with famous domestic manufacturer, and excellent customer resources overseas. We are skilled in
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Type:Lab/Research institutions
inquiryp-nitrobenzyl 7-phenylacetamido-3-hydroxy-3-cephalosporin-4-carboxylate
Conditions | Yield |
---|---|
Stage #1: C22H19N3O6S With sodium carbonate; p-toluenesulfonyl chloride In dichloromethane at -5℃; for 2h; Stage #2: With morpholine In dichloromethane for 0.5h; Further stages; | 82.7% |
(6R)-3-methylene-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2ξ-carboxylic acid 4-nitro-benzyl ester
p-nitrobenzyl 7-phenylacetamido-3-hydroxy-3-cephalosporin-4-carboxylate
Conditions | Yield |
---|---|
With ozone In dichloromethane |
p-nitrobenzyl 7-phenylacetamido-3-hydroxy-3-cephalosporin-4-carboxylate
Conditions | Yield |
---|---|
With Lawessons reagent; ozone 1.) CH2Cl2, 2.) CH2Cl2; Yield given. Multistep reaction; |
p-nitrobenzyl 7-phenylacetamido-3-hydroxy-3-cephalosporin-4-carboxylate
Conditions | Yield |
---|---|
With aluminum (III) chloride; diphenylsilyl chloride In dichloromethane at 15 - 25℃; for 4h; | 98.1% |
p-nitrobenzyl 7-phenylacetamido-3-hydroxy-3-cephalosporin-4-carboxylate
(6R,7R)-7-amino-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: diphenylsilyl chloride; aluminum (III) chloride / dichloromethane / 4 h / 15 - 25 °C 2.1: diisooctyl phenyl phosphite; bromine; 1H-imidazole / dichloromethane / 5 h / -45 - -40 °C 2.2: 0.5 h 3.1: trimethylsilyl bromide / dichloromethane / 5.5 h / 20 - 25 °C View Scheme |
p-nitrobenzyl 7-phenylacetamido-3-hydroxy-3-cephalosporin-4-carboxylate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: diphenylsilyl chloride; aluminum (III) chloride / dichloromethane / 4 h / 15 - 25 °C 2.1: diisooctyl phenyl phosphite; bromine; 1H-imidazole / dichloromethane / 5 h / -45 - -40 °C 2.2: 0.5 h View Scheme |
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