1,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
Cas:13553-79-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryAs 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:13553-79-2
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:13553-79-2
Min.Order:0 Metric Ton
Negotiable
Type:Manufacturers
inquiryXi’an Quanao Biotech Co., Ltd. with 18 years experience in plant extract filed. Product grade: Medicine, Health care product, Cosmetics, Food, Beverage, Feed. Hot selling market: Europe, North America, South America, Middle East, Asia Pacifi
Cas:13553-79-2
Min.Order:1 Kilogram
FOB Price: $99.0 / 139.0
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
Cas:13553-79-2
Min.Order:1
Negotiable
Type:Other
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:13553-79-2
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryCangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new api, intermedi
Our 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
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:13553-79-2
Min.Order:1 Kilogram
FOB Price: $1.0 / 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:13553-79-2
Min.Order:10 Gram
FOB Price: $146.0 / 176.0
Type:Trading Company
inquiryProduct Name Rifamycin S Synonyms Rifamycin S;4-dioxo-rifamycin CAS: 13553-79-2 MF: C19H22FN3O4 MW: 375.39 EINECS: -
Cas:13553-79-2
Min.Order:5 Metric Ton
FOB Price: $1.0 / 2.0
Type:Other
inquiry1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:powder Storage:Store in sealed containers at cool & dry pla
Cas:13553-79-2
Min.Order:100 Gram
Negotiable
Type:Other
inquiryAppearance:Orange crystalline solid Storage:-20°C Freezer Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Any port in China
Cas:13553-79-2
Min.Order:1 Metric Ton
Negotiable
Type:Lab/Research institutions
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:13553-79-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryOur company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present
Rifamycin S CAS:13553-79-2 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 intermediates
Cas:13553-79-2
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:13553-79-2
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
Cas:13553-79-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
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 qualifie
Cas:13553-79-2
Min.Order:1 Kilogram
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
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APIs Best price; High Quality; Superior Service; Fast delivery. Appearance:White crystalline powder Storage:Stored in a cool & dried place Package:25kg/fiber drum or according to your requirements Application:Pharmaceutical Material Por
Cas:13553-79-2
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryMassive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and
Cas:13553-79-2
Min.Order:1 Gram
FOB Price: $1.0
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:13553-79-2
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquirySuperior quality, moderate price & quick delivery. Appearance:Yellow orange Crystalline powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:100g/bottle,1kg/bottle,25kg/drum or as per your request Applic
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
Cas:13553-79-2
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
inquiryProduct name: Rifamycin S CAS No.: 13553-79-2 Molecule Formula:C37H45NO12 Molecule Weight:695.75 Purity: 99.0% Package: 25kg/drum Description:White powder Manufacture Standards:Enterprise Standard TESTING ITEMS SP
Cas:13553-79-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
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:13553-79-2
Min.Order:1 Kilogram
FOB Price: $1000.0
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
Cas:13553-79-2
Min.Order:0
Negotiable
Type:Trading Company
inquiryrifamycin B
rifamycin S
Conditions | Yield |
---|---|
With hydrogenchloride In methanol 1.) 5 min; 2.) room temperature, 5 h; | 91% |
Conditions | Yield |
---|---|
In ethyl acetate at 70℃; for 4.75h; Product distribution; | A 70% B 80% |
Conditions | Yield |
---|---|
In ethyl acetate at 70℃; for 5.75h; Product distribution; | A 71% B 46% |
Conditions | Yield |
---|---|
In ethyl acetate at 70℃; for 6.25h; Product distribution; | A 67% B 37% |
A
sodium p-chlorobenzenesulphinate
B
sodium 4-chlorobenzenesulfonate
C
rifamycin S
Conditions | Yield |
---|---|
In ethyl acetate at 70℃; for 4h; Product distribution; | A n/a B n/a C 49% |
4-[(2R)-2-((S)-1-hydroxy-ethyl)-pyrrolidin-1-yl]-4-deoxy-rifamycin
rifamycin S
Conditions | Yield |
---|---|
With cis-nitrous acid |
rifamycin O
rifamycin S
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: tetrahydrofuran 2: HNO2 View Scheme |
rifamycin S
rifamycin SV
Conditions | Yield |
---|---|
With ascorbic acid 1.) phosphate buffer, pH 7.0, 50 deg C; 2.) 4 deg C, 1 day; | 88% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water for 3h; Ambient temperature; | 87% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water for 3h; Ambient temperature; | 85% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water for 3h; Ambient temperature; | 80% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water for 3h; Ambient temperature; | 77% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water for 3h; Ambient temperature; | 76% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water for 3h; Ambient temperature; | 76% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water for 3h; Ambient temperature; | 76% |
Conditions | Yield |
---|---|
With silver(l) oxide In N,N-dimethyl-formamide for 12.5h; Ambient temperature; | 73% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water for 3h; Ambient temperature; | 62% |
rifamycin S
methyl iodide
A
8-O-methyl-N-methylrifamycin
B
8-O-methylrifamycin S imino methylether
Conditions | Yield |
---|---|
With silver(l) oxide In acetonitrile for 10h; Ambient temperature; work-up in the dark; | A 58% B n/a |
Conditions | Yield |
---|---|
With pyridine at 40℃; for 3.5h; | 48% |
Conditions | Yield |
---|---|
at 4℃; for 1h; | 42% |
rifamycin S
sodium rifamycin SV-3-sulfonate
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; sodium sulfite In 1,4-dioxane; water for 2h; Ambient temperature; | 41% |
Conditions | Yield |
---|---|
With pyridine at 63℃; for 1.5h; | 38% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water Ambient temperature; | 32% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water Ambient temperature; | 31% |
Conditions | Yield |
---|---|
With dimethyl sulfoxide In water Ambient temperature; | 16% |
Conditions | Yield |
---|---|
With acetic acid In water for 12h; Ambient temperature; | 9% |
Conditions | Yield |
---|---|
With pyridine for 3.5h; Ambient temperature; | 4% |
Conditions | Yield |
---|---|
With pyridine for 48h; Ambient temperature; | 2% |
Conditions | Yield |
---|---|
With pyridine for 48h; Ambient temperature; | 2% |
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