Chemical identity

Aflatoxin B2

CAS 7220-81-7 · C17H14O6

01Identity

Identifiers and names for this exact compound. Empty fields are left unassigned.

Lazychem IDLC-05204
PubChem CID2724360
NameAflatoxin B2
CAS RN7220-81-7
Molecular formulaC17H14O6
Molecular weight314.29 g/mol
IUPAC name(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
InChIKeyWWSYXEZEXMQWHT-WNWIJWBNSA-N

02Structure identifiers

2D structurePubChem CID 2724360
Two-dimensional chemical structure of Aflatoxin B2, CAS 7220-81-7
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 5 rings, includes aromatic atoms, includes aliphatic carbon, has 2 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres2
Unassigned stereocentres0
Ring count5
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCOC1=C2C3=C(C(=O)CC3)C(=O)OC2=C4[C@@H]5CCO[C@@H]5OC4=C1
InChINot listed
Formula from structureC17H14O6
Molecular weight from structure314.29 g/mol

03Stereochemistry

The published structure contains 2 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres2Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 4Before symmetry reduction

Published same-connectivity configurations

1 record

These records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

No additional structure-linked configuration with the same connectivity is currently present in the LazyChem dataset.

Scope: The mathematical 2^n value is only an upper bound. Symmetry and other stereogenic elements can change the number of distinct stereoisomers. A hypothetical configuration is not published as a compound record without a verified structure identity.

04India status for this compound

These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.

NDPS / RCSNO EXACT MATCH FOUNDCAS 7220-81-7 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 7220-81-7 has no exact match in the reviewed SCOMET list.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

05Names and relationships

Associated parent compound

Aflatoxin

View associated product family

Other names

  • AFLATOXIN B2
  • 7220-81-7
  • Dihydroaflatoxin B1
  • Dihydroaflatoxine B1
  • CCRIS 13
  • 7SKR7S646P
  • CHEBI:48209
  • BRN 1355115
  • (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
  • DTXSID70222535
  • 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

Related records from the same parent family

06Documented history

Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.

No dated history available

No verified discovery, first report, occurrence, use or issue event is currently available for this identity.

07Sources