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AFLATOXIN B2

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Name

AFLATOXIN B2

EINECS 230-618-8
CAS No. 7220-81-7 Density 1.52 g/cm3
PSA 74.97000 LogP 2.15290
Solubility 15mg/L(temperature not stated) Melting Point 286-289 °C
Formula C17H14 O6 Boiling Point 521 °C at 760 mmHg
Molecular Weight 314.295 Flash Point 234 °C
Transport Information UN 3462 6 Appearance N/A
Safety Confirmed human carcinogen with experimental tumorigenic data. Poison by ingestion. Mutation data reported. When heated to decomposition it emits acrid smoke and fumes. See also various aflatoxins. Risk Codes 45-26/27/28
Molecular Structure Molecular Structure of 7220-81-7 (AFLATOXIN B2) Hazard Symbols VeryT+
Synonyms

AflatoxinB2 (7CI); 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-cis)-;Cyclopenta[c]furo[3',2':4,5]furo[2,3-h][1]benzopyran-1,11-dione, 2,3,6aa,8,9,9aa-hexahydro-4-methoxy- (8CI);Dihydroaflatoxin B1; Dihydroaflatoxine B1

Article Data 2

AFLATOXIN B2 Synthetic route

6795-22-8

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

30694-05-4

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

7220-81-7

aflatoxin B2

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

aflatoxin B1

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;
865811-99-0

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

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
865812-13-1

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

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

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
865812-00-6

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

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
2880-58-2

2-methoxy-1,4-benzoquinone

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
292824-29-4

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

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
292824-31-8

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

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

AFLATOXIN B2 Chemical Properties

Product Name: Aflatoxin B2 (CAS NO.7220-81-7)


Molecular Formula: C17H14O6
Molecular Weight:  314.29g/mol
Mol File: 7220-81-7.mol
Einecs: 230-618-8
Appearance: Off-white powder
Melting Point: 286-289 °C
Boiling point: 521 °C at 760 mmHg
Storage Temperature: 2-8°C
Flash Point: 234.1 °C
Density: 1.52 g/cm3
Surface Tension: 65.6 dyne/cm
Enthalpy of Vaporization: 79.41 kJ/mol
Vapour Pressure: 5.92E-11 mmHg at 25°C
XLogP3-AA: 1.3
H-Bond Donor: 0
H-Bond Acceptor: 6
Product Categories: Biotoxins; Mycotoxins; Single component solutions; Cancer Research; CarcinogensCell Signaling and Neuroscience; Mold; Toxins and Venoms; CRM and Matrix RMApplication CRMs; A; AA to ALBiotoxins; Alphabetic; Food and Agriculture CRM; Other

AFLATOXIN B2 Toxicity Data With Reference

1.    

mma-sat 370 ng/plate

    MUREAV    Mutation Research. 130 (1984),79.
2.    

dnd-rat-par 40 µg/kg/2D-C

    BBRCA9    Biochemical and Biophysical Research Communications. 83 (1978),1354.
3.    

sce-ham:lng 3100 µg/L

    CRNGDP    Carcinogenesis. 1 (1980),759.
4.    

dnd-mam:lym 50 µmol/L

    CRNGDP    Carcinogenesis. 3 (1982),423.
5.    

dns-rat:lvr 10 µmol/L/1H

    CNREA8    Cancer Research. 37 (1977),1845.
6.    

mma-ham:lng 83 µmol/L

    MUREAV    Mutation Research. 46 (1977),27.
7.    

orl-dck LD50:1700 µg/kg

    NATUAS    Nature. 200 (1963),1101.

AFLATOXIN B2 Consensus Reports

IARC Cancer Review: Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 10 (1976),p. 51.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Limited Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 1 (1972),p. 145.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) .

AFLATOXIN B2 Safety Profile

Confirmed human carcinogen with experimental tumorigenic data. Poison by ingestion. Mutation data reported. When heated to decomposition it emits acrid smoke and fumes. See also various aflatoxins.
Safety Information of Aflatoxin B2 (CAS NO.7220-81-7):
Hazard Codes: T+,T,F,Xn
Risk Statements: 45-26/27/28-39/23/24/25-23/24/25-11-65-48/23/24/25-36/38-46-36-20/21/22 
11:  Highly Flammable
20:  Harmful by inhalation 
21:  Harmful in contact with skin 
22:  Harmful if swallowed 
23:  Toxic by inhalation 
24:  Toxic in contact with skin 
25:  Toxic if swallowed 
26:  Very Toxic by inhalation 
27:  Very Toxic in contact with skin 
28:  Very Toxic if swallowed 
36:  Irritating to the eyes 
38:  Irritating to the skin 
39:  Danger of very serious irreversible effects 
45:  May cause cancer 
48:  Danger of serious damage to health by prolonged exposure 
65:  Harmful: May cause lung damage if swallowed
Safety Statements: 53-36-45-36/37-26-62
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36:  Wear suitable protective clothing  
37:  Wear suitable gloves 
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
53:  Avoid exposure - obtain special instruction before use 
62:  If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label 

AFLATOXIN B2 Specification

 Aflatoxin B2 ,its CAS NO. is 7220-81-7,the synonyms is (6ar-cis)-Hexahydro-4-methoxy ; ,9,9a-Alpha-hexahydro-4-methoxy- ; 2,3,6Aalpha,8,9,9aalpha-hexahydro-4-methoxycyclopenta(c)furo(3',2':4,5)furo(2,;3-h)(1)benzopyran-1,11-dione ; 4-Methoxy-2,3,6a,8,9,9a-hexahydrocyclopenta[c]furo[3',2':4,5]furo[2,3-H]chromene-1,11-dione ; 9Aalpha-hexahydro-4-methoxy- ; Cyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-1,11-dione,2,3,6a-alpha,8 .

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