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:7220-81-7
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryAccurate valued; NRM, HPLC, Lc-MS/MS methods valued and certified, ensure the accurate purity; All the standards attached COA and MSDS; More than 80 kinds of mycotoxin standards can be provided; Competitive price; Professional technical team to
Cas:7220-81-7
Min.Order:1 Milliliter
FOB Price: $2.0 / 5.0
Type:Trading Company
inquiryDayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe
Cas:7220-81-7
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
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:7220-81-7
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
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:7220-81-7
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryAFLATOXIN B2 CAS:7220-81-7 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:7220-81-7
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:7220-81-7
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:7220-81-7
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
Cas:7220-81-7
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryHangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu
Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
Cas:7220-81-7
Min.Order:1 bottle
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
ADVANTAGE:1. More than 3,000 Chinese medicine reference substances / standard products available from stock, issued on the same day, multiple cities can be delivered the next day2. The products are provided with COA, HPLC, NMR, quality assurance, pac
2,3,6aalpha,8,9,9aalpha-hexahydro-4-methoxycyclopenta[c]furo[2',3':4,5]furo[2,3-h]chromene-1,11-dioneAppearance:detailed see specifications Storage:Keep away of light, cool place Package:25kg/drum;200kg/drum Application:An important raw material and
Cas:7220-81-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
good quality, competitive price, thoughtful after sale serviceAppearance:white powder Storage:Keep it in dry,shady and cool place Package:1ml Application:Pharma;Industry;Agricultural;chemical reaserch Transportation:by express or by sea Port:Any port
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Price, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right
Cas:7220-81-7
Min.Order:0
Negotiable
Type:Trading Company
inquiryOur relying on perfect quality management system, strict raw materials circulation management system, strict process control program, advanced detection means and strict testing system, fully and effectively guarantee the product quality, look forw
United Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat
Cas:7220-81-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryShaanxi Cuicheng Biomedical Technology Co., Ltd. is located in Chuangzhi Industrial Park, Economic and Technological Development Zone, Hanzhong City, Shaanxi Province, China. It is a company specializing in natural medicines and high-throughput scree
FINETECH INDUSTRY LIMITED is a LONDON based CRO company providing drug discovery & development services to worldwide clients. FINETECH INDUSTRY LIMITED supplies the AFLATOXIN B2, CAS:7220-81-7 with the most competitive price and the best quality. We
Supply top quality products with a reasonable price Application:api
Cyclopenta[c]furo[3',2':4,5]furo[2,3-h][1]benzopyran-1,11-dione,2,3,6a,8,9,9a-hexahydro-4-methoxy-, (6aR,9aS)-Appearance:Off white to slight yellow solid Storage:Stored in shaded, cool and dry places Package:1L 5L 10L 25L bottle Application:pharma in
Cas:7220-81-7
Min.Order:0
Negotiable
Type:Trading Company
inquiryCas:7220-81-7
Min.Order:0
Negotiable
Type:Trading Company
inquiry(-)-2,3,3aS,8aR-tetrahydro-4-hydroxy-6-methoxy[2,3-d]-benzo[b]furan
ethyl 2-bromo-5-oxocyclopent-1-enecarboxylate
aflatoxin B2
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; zinc(II) carbonate In dichloromethane at 20℃; for 20h; | 36% |
Conditions | Yield |
---|---|
With hydrogenchloride; sodium hydroxide; LACTIC ACID at 37℃; pH=3.35 - 4.50; Kinetics; Further Variations:; reagents concentration; |
(-)-cis-5-trifluoromethanesulfonyloxy-2,3,3aS,8aR-tetrahydro-6-methoxy[2,3-d]-benzo[b]furan-4-carboxaldehyde
aflatoxin B2
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: tetrahydrofuran; diethyl ether / 2 h / -20 °C 2: 162 mg / Dess-Martin periodinane / CH2Cl2 / 3 h / 20 °C 3: 62.5 percent / urea-H2O2 complex; trifluoroacetic anhydride / CH2Cl2 / 48 h / 20 °C 4: 60 percent / H2; Raney nickel / methanol / 3 h / 20 °C 5: 36 percent / NaHCO3; ZnCO3 / CH2Cl2 / 20 h / 20 °C View Scheme |
acetic acid 6-methoxy-5-trifluoromethanesulfonyloxy-2,3,3a,8a-tetrahydro-1,8-dioxa-cyclopenta[a]inden-4-yl ester
aflatoxin B2
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 60 percent / H2; Raney nickel / methanol / 3 h / 20 °C 2: 36 percent / NaHCO3; ZnCO3 / CH2Cl2 / 20 h / 20 °C View Scheme |
aflatoxin B2
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 162 mg / Dess-Martin periodinane / CH2Cl2 / 3 h / 20 °C 2: 62.5 percent / urea-H2O2 complex; trifluoroacetic anhydride / CH2Cl2 / 48 h / 20 °C 3: 60 percent / H2; Raney nickel / methanol / 3 h / 20 °C 4: 36 percent / NaHCO3; ZnCO3 / CH2Cl2 / 20 h / 20 °C View Scheme |
(-)-cis-5-trifluoromethanesulfonyloxy-2,3,3aS,8aR-tetrahydro-4-acetyl-6-methoxy[2,3-d]-benzo[b]furan
aflatoxin B2
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 62.5 percent / urea-H2O2 complex; trifluoroacetic anhydride / CH2Cl2 / 48 h / 20 °C 2: 60 percent / H2; Raney nickel / methanol / 3 h / 20 °C 3: 36 percent / NaHCO3; ZnCO3 / CH2Cl2 / 20 h / 20 °C View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 8 steps 1.1: (R)-α,α-diphenyl-2-pyrrolidinemethanol derived catalyst / acetonitrile / 5 h / 20 °C 2.1: AcOH / 48 h / 110 °C 2.2: 40 percent / aq. H2SO4 / 1 h / 75 °C 3.1: 80 percent / DMAP; pyridine / CH2Cl2 / 2 h / 0 °C 4.1: tetrahydrofuran; diethyl ether / 2 h / -20 °C 5.1: 162 mg / Dess-Martin periodinane / CH2Cl2 / 3 h / 20 °C 6.1: 62.5 percent / urea-H2O2 complex; trifluoroacetic anhydride / CH2Cl2 / 48 h / 20 °C 7.1: 60 percent / H2; Raney nickel / methanol / 3 h / 20 °C 8.1: 36 percent / NaHCO3; ZnCO3 / CH2Cl2 / 20 h / 20 °C View Scheme | |
Multi-step reaction with 8 steps 1.1: (R)-α,α-diphenyl-2-pyrrolidinemethanol derived catalyst / acetonitrile; CH2Cl2 / 10 h / -78 - 20 °C 2.1: AcOH / 48 h / 110 °C 2.2: 40 percent / aq. H2SO4 / 1 h / 75 °C 3.1: 80 percent / DMAP; pyridine / CH2Cl2 / 2 h / 0 °C 4.1: tetrahydrofuran; diethyl ether / 2 h / -20 °C 5.1: 162 mg / Dess-Martin periodinane / CH2Cl2 / 3 h / 20 °C 6.1: 62.5 percent / urea-H2O2 complex; trifluoroacetic anhydride / CH2Cl2 / 48 h / 20 °C 7.1: 60 percent / H2; Raney nickel / methanol / 3 h / 20 °C 8.1: 36 percent / NaHCO3; ZnCO3 / CH2Cl2 / 20 h / 20 °C View Scheme |
(-)-2,3,3aS,8aR-tetrahydro-5-hydroxy-6-methoxy[2,3-d]-benzo[b]furan
aflatoxin B2
Conditions | Yield |
---|---|
Multi-step reaction with 7 steps 1.1: AcOH / 48 h / 110 °C 1.2: 40 percent / aq. H2SO4 / 1 h / 75 °C 2.1: 80 percent / DMAP; pyridine / CH2Cl2 / 2 h / 0 °C 3.1: tetrahydrofuran; diethyl ether / 2 h / -20 °C 4.1: 162 mg / Dess-Martin periodinane / CH2Cl2 / 3 h / 20 °C 5.1: 62.5 percent / urea-H2O2 complex; trifluoroacetic anhydride / CH2Cl2 / 48 h / 20 °C 6.1: 60 percent / H2; Raney nickel / methanol / 3 h / 20 °C 7.1: 36 percent / NaHCO3; ZnCO3 / CH2Cl2 / 20 h / 20 °C View Scheme |
(-)-2,3,3aS,8aR-tetrahydro-5-hydroxy-6-methoxy[2,3-d]-benzo[b]furan-4-carboxaldehyde
aflatoxin B2
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 80 percent / DMAP; pyridine / CH2Cl2 / 2 h / 0 °C 2: tetrahydrofuran; diethyl ether / 2 h / -20 °C 3: 162 mg / Dess-Martin periodinane / CH2Cl2 / 3 h / 20 °C 4: 62.5 percent / urea-H2O2 complex; trifluoroacetic anhydride / CH2Cl2 / 48 h / 20 °C 5: 60 percent / H2; Raney nickel / methanol / 3 h / 20 °C 6: 36 percent / NaHCO3; ZnCO3 / CH2Cl2 / 20 h / 20 °C View Scheme |
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