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Xi'an Xszo Chem Co., Ltd.

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

High Content Natural Extract Aflatoxin B2 HACCP manufacturer

Cas:7220-81-7

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Pribolab PTE.LTD

Accurate 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

STD#1055 Aflatoxin B2 in acetonitrile

Cas:7220-81-7

Min.Order:1 Milliliter

FOB Price: $2.0 / 5.0

Type:Trading Company

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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem 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

2,3,6aalpha,8,9,9aalpha-hexahydro-4-methoxycyclopenta[c]furo[2',3':4,5]furo[2,3-h]chromene-1,11-dione

Cas:7220-81-7

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Zhuozhou Wenxi import and Export Co., Ltd

WITH 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

Manufacturer supply CAS 7220-81-7 with best quality

Cas:7220-81-7

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.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

Qingdao Beluga Import and Export Co., LTD

AFLATOXIN 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

AFLATOXIN B2 CAS:7220-81-7

Cas:7220-81-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, 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

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)-

Cas:7220-81-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Henan Wentao Chemical Product Co., Ltd.

Henan 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

Zibo Hangyu Biotechnology Development Co., Ltd

Zibo 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

Aflatoxin B2

Cas:7220-81-7

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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Hangzhou Huarong Pharm Co., Ltd.

Hangzhou 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

Aflatoxin B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Shanghai Acmec Biochemical Technology Co., Ltd.

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

Acmec Aflatoxin B2 5mg

Cas:7220-81-7

Min.Order:1 bottle

Negotiable

Type:Lab/Research institutions

inquiry

Henan Allgreen Chemical Co.,Ltd

high 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

AFLATOXIN B2(RG)

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Manufacturers

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Chengdu Lemeitian Pharmaceutical Technology Co,. Ltd

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

Aflatoxin B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

AFLATOXIN B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Antimex Chemical Limied

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

DB BIOTECH CO., LTD

best seller Application:API

AFLATOXIN B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Henan Kanbei Chemical Co.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

AFLATOXIN B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Chinqesen Biotechnology Co., Ltd.

Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen

7220-81-7

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Shanghai Yuanye Bio-Technology Co., Ltd.

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

Aflatoxin B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hebei Muhuang Technology Co., Ltd

best seller Application:API

AFLATOXIN B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

ZHEJIANG JIUZHOU CHEM CO.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

AFLATOXIN B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Jilin haofei import and export trade Co.,Ltd

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

Chengdu Gelipu Biotechnology Co., Ltd.

Our 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

Aflatoxin B2

Cas:7220-81-7

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai united Scientific Co.,Ltd.

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

Shaanxi Cuicheng Biomedical Technology Co., Ltd.

Shaanxi 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

Aflatoxin B2(7220-81-7)

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Finetech Industry Limited

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

AFLATOXIN B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hebei Ruishun Trade Co.,Ltd

Supply top quality products with a reasonable price Application:api

7220-81-7

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Chemical Co.Ltd

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

cfm Oskar Tropitzsch

AFLATOXIN B2

AFLATOXIN B2

Cas:7220-81-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthetic route

(-)-2,3,3aS,8aR-tetrahydro-4-hydroxy-6-methoxy[2,3-d]-benzo[b]furan
6795-22-8

(-)-2,3,3aS,8aR-tetrahydro-4-hydroxy-6-methoxy[2,3-d]-benzo[b]furan

ethyl 2-bromo-5-oxocyclopent-1-enecarboxylate
30694-05-4

ethyl 2-bromo-5-oxocyclopent-1-enecarboxylate

aflatoxin B2
7220-81-7

aflatoxin B2

Conditions
ConditionsYield
With sodium hydrogencarbonate; zinc(II) carbonate In dichloromethane at 20℃; for 20h;36%
aflatoxin B1
1162-65-8

aflatoxin B1

aflatoxin B2
7220-81-7

aflatoxin B2

Conditions
ConditionsYield
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
865811-99-0

(-)-cis-5-trifluoromethanesulfonyloxy-2,3,3aS,8aR-tetrahydro-6-methoxy[2,3-d]-benzo[b]furan-4-carboxaldehyde

aflatoxin B2
7220-81-7

aflatoxin B2

Conditions
ConditionsYield
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
865812-13-1

acetic acid 6-methoxy-5-trifluoromethanesulfonyloxy-2,3,3a,8a-tetrahydro-1,8-dioxa-cyclopenta[a]inden-4-yl ester

aflatoxin B2
7220-81-7

aflatoxin B2

Conditions
ConditionsYield
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
trifluoro-methanesulfonic acid 4-(1-hydroxy-ethyl)-6-methoxy-2,3,3a,8a-tetrahydro-1,8-dioxa-cyclopenta[a]inden-5-yl ester

trifluoro-methanesulfonic acid 4-(1-hydroxy-ethyl)-6-methoxy-2,3,3a,8a-tetrahydro-1,8-dioxa-cyclopenta[a]inden-5-yl ester

aflatoxin B2
7220-81-7

aflatoxin B2

Conditions
ConditionsYield
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
865812-00-6

(-)-cis-5-trifluoromethanesulfonyloxy-2,3,3aS,8aR-tetrahydro-4-acetyl-6-methoxy[2,3-d]-benzo[b]furan

aflatoxin B2
7220-81-7

aflatoxin B2

Conditions
ConditionsYield
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
2-methoxy-1,4-benzoquinone
2880-58-2

2-methoxy-1,4-benzoquinone

aflatoxin B2
7220-81-7

aflatoxin B2

Conditions
ConditionsYield
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
292824-29-4

(-)-2,3,3aS,8aR-tetrahydro-5-hydroxy-6-methoxy[2,3-d]-benzo[b]furan

aflatoxin B2
7220-81-7

aflatoxin B2

Conditions
ConditionsYield
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
292824-31-8

(-)-2,3,3aS,8aR-tetrahydro-5-hydroxy-6-methoxy[2,3-d]-benzo[b]furan-4-carboxaldehyde

aflatoxin B2
7220-81-7

aflatoxin B2

Conditions
ConditionsYield
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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