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Screening compounds

Aflatoxin B2

Also known as Dihydroaflatoxin B1, Dihydroaflatoxine B1, (3S,7R)-11-methoxy-6,8,19-trioxapentacyclo[10.7.0.02,9.03,7.013,17]nonadeca-1,9,11,13(17)-tetraene-16,18-dione

CAS 7220-81-7Formula C17H14O6Molar mass 314.29 g/molEC 230-618-8
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Serious health hazard 12 suppliers listed
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Aflatoxin B2 chemical structure, C17H14O6, CAS 7220-81-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
7220-81-7
Formula
C17H14O6
Appearance
Crystals
Melting point
287.5 °C
HS code
293220
Category
Screening compounds
Illustrative photo, a shrink wrapped pallet of kraft paper sacks in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Aflatoxin B2?

Plain description, key identifiers and synonyms

Aflatoxin B2 is an aflatoxin having a hexahydrocyclopenta[c]furo[3',2':4,5]furo[2,3-h]chromene skeleton with oxygen functionality at positions 1, 4 and 11.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(3S,7R)-11-methoxy-6,8,19-trioxapentacyclo[10.7.0.02,9.03,7.013,17]nonadeca-1,9,11,13(17)-tetraene-16,18-dione
CAS number
7220-81-7 CAS number cross-checked
EC number
230-618-8
Molecular formula
C17H14O6
UNII
7SKR7S646P
MDL number
MFCD00078140
InChIKey
WWSYXEZEXMQWHT-WNWIJWBNSA-N
InChI
InChI=1S/C17H14O6/c1-20-10-6-11-14(8-4-5-21-17(8)22-11)15-13(10)7-2-3-9(18)12(7)16(19)23-15/h6,8,17H,2-5H2,1H3/t8-,17+/m0/s1
Canonical SMILES
COc1cc2c(c3oc(=O)c4c(c13)CCC4=O)C1CCOC1O2
Isomeric SMILES
COC1=C2C3=C(C(=O)CC3)C(=O)OC2=C4[C@@H]5CCO[C@@H]5OC4=C1

Synonyms

  • Dihydroaflatoxin B1
  • Dihydroaflatoxine B1
  • (3S,7R)-11-methoxy-6,8,19-trioxapentacyclo[10.7.0.02,9.03,7.013,17]nonadeca-1,9,11,13(17)-tetraene-16,18-dione
  • 5-19-10-00552 (Beilstein Handbook Reference)
  • (6aR,9aS)-4-methoxy-2,3,6a,8,9,9a-hexahydrocyclopenta[c]furo[3',2':4,5]furo[2,3-h]chromene-1,11-dione
  • 2,3,6aalpha,8,9,9aalpha-Hexahydro-4-methoxycyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-1,11-dione
  • 2,3,6aalpha,8,9,9aalpha-hexahydro-4-methoxycyclopenta[c]furo[3',2':4,5]furo[2,3-h][1]benzopyran-1,11-dione
  • Cyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-1,11-dione, 2,3,6a-alpha,8,9,9a-alpha-hexahydro-4-methoxy-
  • (3S,7R)-11-methoxy-6,8,19-trioxapentacyclo(10.7.0.02,9.03,7.013,17)nonadeca-1,9,11,13(17)-tetraene-16,18-dione
  • (6aR,9aS)-4-methoxy-2,3,6a,8,9,9a-hexahydrocyclopenta(c)furo(3',2':4,5)furo(2,3-h)chromene-1,11-dione
  • 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)-
  • 11-methoxy-6,8,19-trioxapentacyclo(10.7.0.02,9.03,7.013,17)nonadeca-1(12),2(9),10,13(17)-tetraene-16,18-dione
  • aflatoxin-B(2)
  • (6aR,9aS)-2,3,6a,8,9,9ahexahydro-4-methoxy-cyclopenta[c]furo[3',2':4,5]furo[2,3h][1]benzopyran-1,11-dione
  • (6aR,9aS)-4-methoxy-2,3,9,9a-tetrahydrocyclopenta[c]furo[3',2':4,5]furo[2,3-h]chromene-1,11(6aH,8H)-dione
  • 2,3,6aalpha,8,9,9aalpha-hexahydro-4-methoxycyclopenta[c]furo[3',2':4,5]furo[2,3-h]chromene-1,11-dione
  • Aflatoxin B2 0.5 microg/mL in Acetonitrile
  • 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)-
  • 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)-
  • Dihyd roaflatoxine B1
  • Aflatoxin b
  • Aflatoxin B2, reference material
  • Aflatoxin B2, from Aspergillus flavus
  • Cyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-1,11-dione, 2,3,6aalpha,8,9,9aalpha-hexahydro-4-methoxy-
  • Aflatoxin B2 3.8microg/g in Acetonitrile
Show all 34 synonyms
  • 4,5]furo[2,3-h][1]benzopyran-1,11-dione
  • Aflatoxin B2 solution in Acetonitrile, 100ug/mL
  • (6aR-cis)-2,3,6a,8,9,9a-hexahydro-4-methoxycyclopenta[c]furo[3',2'
  • (6aR,9aS)-2,3,6a,8,9,9a-Hexahydro-4-methoxycyclopenta[c]furo[3',2':4,5]furo[2,3-h][1]benzopyran-1,11-dione
  • (6aR,9aS)-4-Methoxy-2,3,6a,8,9,9a-hexahydrocyclopenta[c]furo[3',2':4,5]furo[2,3-h][1]benzopyran-1,11-dione
  • (6aR-cis)-2,3,6a,8,9,9a-hexahydro-4-methoxycyclopenta[c]furo[3',2', 4,5]furo[2,3-h][1]benzopyran-1,11-dione
  • (9aS,6aR)-4-methoxy-2,3,6a,9a-tetrahydro-8H,9H-cyclopenta[1,2-c]oxolano[3',2'- 5,4]furano[2,3-h]chromene-1,11-dione
  • 2,3,6Aalpha,8,9,9aalpha-hexahydro-4- methoxycyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran- 1,11-dione
  • 2,3,6aalpha,8,9,9aalpha-Hexahydro-4-methoxycyclopenta(c)furo(2',3':4,5)furo(2,3-h)chromene-1,11-dione

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Crystalsexp.
Melting point
287.5 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
314.29 g/molcalc.
Exact mass
314.079 Dacalc.
LogP (octanol/water)
2.15calc.
Topological polar surface area
74.97 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
1calc.
Heavy atoms
23calc.
Rings
5calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.41calc.
Formal charge
0calc.
Stereocentres
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1CCc2c1c(=O)oc1c3c(ccc21)OC1OCCC31

O=C1CCc2c1c(=O)oc1c3c(ccc21)OC1OCCC31

5 rings, 21 atoms.

35 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H300 + H310 + H330Fatal if swallowed. Fatal in contact with skin. Fatal if inhaled.
  • H300Fatal if swallowed.
  • H310Fatal in contact with skin.
  • H330Fatal if inhaled.
  • H340May cause genetic defects.
  • H350May cause cancer.
Precautionary statements (20)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P318If exposed or concerned, get medical advice.
  • P320Specific treatment is urgent (see supplemental first aid instructions on the label).
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Aflatoxin B2 suppliers

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Where suppliers are based

12 suppliers in 7 countries

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Aflatoxin B2 price

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Uses and applications

What the substance is used for, by industry and function

How it is made

Aflatoxins are produced only in small quantities for research purposes, by fermentation of Aspergillus flavus or Aspergillus parasiticus on solid substrates or media in the laboratory. Aflatoxins are extracted by solvents and purified by chromatography. (Aflatoxins)

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Aflatoxin B2 is traded under.

HS 2932.20Indicative HS code

Lactones

World exports in 2024
$1.97B
−4.7% vs 2023, imports $2.07B
2019 to 2024
Top exporters
  1. China56.3%
  2. India * partner reported7.4%
  3. Germany7.3%
Top importers
  1. United States14.2%
  2. India * partner reported13.5%
  3. Brazil8.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Aflatoxin B2 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Aflatoxin B2, based on the data on this page

What is Aflatoxin B2?

Aflatoxin B2 is an aflatoxin having a hexahydrocyclopenta[c]furo[3',2':4,5]furo[2,3-h]chromene skeleton with oxygen functionality at positions 1, 4 and 11.

What is the CAS number of Aflatoxin B2?

The CAS registry number of Aflatoxin B2 is 7220-81-7.

What is the molecular formula and weight of Aflatoxin B2?

The molecular formula of Aflatoxin B2 is C17H14O6 and its molar mass is 314.29 g/mol.

What is Aflatoxin B2 used for?

Known uses and roles of Aflatoxin B2 include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Aflatoxin B2 hazardous?

Aflatoxin B2 carries the GHS signal word "Danger". Main hazards: fatal if swallowed. fatal in contact with skin. fatal if inhaled, fatal if swallowed, fatal in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Aflatoxin B2?

Aflatoxin B2 is usually classified under HS code 293220 (Lactones). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Aflatoxin B2?

CompoundList lists 12 suppliers of Aflatoxin B2 in United States, China, Australia, Czech Republic and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Aflatoxin B2 in India?

1 supplier in India list Aflatoxin B2 on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Aflatoxin B2?

Suppliers quote Aflatoxin B2 on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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