Record Information |
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Version | 5.0 |
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Status | Expected but not Quantified |
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Creation Date | 2007-05-23 15:50:53 UTC |
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Update Date | 2021-09-14 15:39:07 UTC |
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HMDB ID | HMDB0006558 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | 2,3-Epoxyaflatoxin B1 |
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Description | 2,3-Epoxyaflatoxin B1 is formed due to the metabolism of aflatoxin B1 (AFB1) by CYP2A13, an enzyme predominantly expressed in the human respiratory tract. There is no detectable AFB1 epoxide formation by CYP2A6, which was also reported to be involved in the metabolic activation of AFB1 (PMID: 16385575 ). Aflatoxins are naturally occurring mycotoxins that are produced by many species of Aspergillus, a fungus. At least 13 different types of aflatoxin are produced in nature. Aflatoxin B1 is considered the most toxic and is produced by both Aspergillus flavus and Aspergillus parasiticus. The native habitat of Aspergillus is in soil, decaying vegetation, hay, and grains undergoing microbiological deterioration and it invades all types of organic substrates whenever conditions are favourable for its growth. Favourable conditions include high moisture content (at least 7%) and high temperature. Aflatoxins B1 (AFB1) are contaminants of improperly stored foods; they are potent genotoxic and carcinogenic compounds, exerting their effects through damage to DNA. They can also induce mutations that increase oxidative damage (PMID: 17214555 ). Crops which are frequently affected by Aspergillus contamination include cereals (maize, sorghum, pearl millet, rice, wheat), oilseeds (peanut, soybean, sunflower, cotton), spices (chile peppers, black pepper, coriander, turmeric, ginger), and tree nuts (almond, pistachio, walnut, coconut, brazil nut). BioTransformer predicts that 2,3-epoxyaflatoxin B1 is a product of aflatoxin B1 metabolism via an epoxidation-of-vinyl-ether reaction catalyzed by CYP1A2 and CYP3A4 enzymes (PMID: 30612223 ). |
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Structure | [H][C@]12O[C@@H]3O[C@@H]3[C@@]1([H])C1=C(O2)C=C(OC)C2=C1OC(=O)C1=C2CCC1=O InChI=1S/C17H12O7/c1-20-7-4-8-11(12-14-17(23-14)24-16(12)21-8)13-10(7)5-2-3-6(18)9(5)15(19)22-13/h4,12,14,16-17H,2-3H2,1H3/t12-,14-,16+,17+/m1/s1 |
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Synonyms | Value | Source |
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Aflatoxin b1 2,3-epoxide | ChEBI | Aflatoxin b1 8,9-epoxide | ChEBI | Aflatoxin b1 exo-8,9-oxide | ChEBI | Aflatoxin b1-2,3-oxide | ChEBI | (6AS,7as,8ar,8BR)-2,3,6a,7a,8a,8b-hexahydro-4-methoxy-cyclopent[c]oxireno[4',5']furo[3',2':4,5]furo[2,3-H][1]benzopyran-1,10-dione | HMDB | 8,9-Epoxy-aflatoxin b1 | HMDB | Aflatoxin b1 8,9-oxide | HMDB | Aflatoxin b1 epoxide | HMDB | Aflatoxin b1 exo-8,9-epoxide | HMDB | Aflatoxin b1, 2,3-oxide | HMDB | exo-Aflatoxin b1-8,9-epoxide | HMDB | [6AS-(6aa,7ab,8ab,8ba)]-2,3,6a,7a,8a,8b-hexahydro-4-methoxy-cyclopent[c]oxireno[4',5']furo[3',2':4,5]furo[2,3-H][1]benzopyran-1,10-dione | HMDB | AFB epoxide | HMDB | AFB1-2,3-oxide | HMDB | Aflatoxin b1-8,9-epoxide | HMDB | AFB1 8,9-oxide | HMDB | 2,3-Epoxyaflatoxin b1 | ChEBI | 2,3-Epoxyaflatoxin B1 | HMDB |
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Chemical Formula | C17H12O7 |
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Average Molecular Weight | 328.273 |
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Monoisotopic Molecular Weight | 328.058302738 |
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IUPAC Name | (3R,4R,6S,8S)-12-methoxy-5,7,9,20-tetraoxahexacyclo[11.7.0.0^{2,10}.0^{3,8}.0^{4,6}.0^{14,18}]icosa-1(13),2(10),11,14(18)-tetraene-17,19-dione |
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Traditional Name | (3R,4R,6S,8S)-12-methoxy-5,7,9,20-tetraoxahexacyclo[11.7.0.0^{2,10}.0^{3,8}.0^{4,6}.0^{14,18}]icosa-1(13),2(10),11,14(18)-tetraene-17,19-dione |
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CAS Registry Number | 42583-46-0 |
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SMILES | [H][C@]12O[C@@H]3O[C@@H]3[C@@]1([H])C1=C(O2)C=C(OC)C2=C1OC(=O)C1=C2CCC1=O |
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InChI Identifier | InChI=1S/C17H12O7/c1-20-7-4-8-11(12-14-17(23-14)24-16(12)21-8)13-10(7)5-2-3-6(18)9(5)15(19)22-13/h4,12,14,16-17H,2-3H2,1H3/t12-,14-,16+,17+/m1/s1 |
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InChI Key | KHBXRZGALJGBPA-IRWJRLHMSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as difurocoumarocyclopentenones. These are polycyclic aromatic compounds containing a cyclopenten-2-one ring fused to the coumarin moiety of the difurocoumarin skeleton. |
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Kingdom | Organic compounds |
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Super Class | Phenylpropanoids and polyketides |
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Class | Coumarins and derivatives |
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Sub Class | Furanocoumarins |
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Direct Parent | Difurocoumarocyclopentenones |
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Alternative Parents | |
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Substituents | - Difurocoumarocyclopentenone
- Difurocoumarin
- Benzopyran
- 1-benzopyran
- Coumaran
- Anisole
- Aryl ketone
- Aryl alkyl ketone
- Alkyl aryl ether
- Pyranone
- Benzenoid
- Pyran
- Meta-dioxane
- Heteroaromatic compound
- Tetrahydrofuran
- Lactone
- Ketone
- Oxacycle
- Organoheterocyclic compound
- Acetal
- Oxirane
- Ether
- Organic oxygen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Aromatic heteropolycyclic compound
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Molecular Framework | Aromatic heteropolycyclic compounds |
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External Descriptors | |
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Ontology |
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Physiological effect | Not Available |
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Disposition | |
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Process | Not Available |
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Role | Not Available |
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Physical Properties |
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State | Solid |
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Experimental Molecular Properties | Property | Value | Reference |
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Melting Point | Not Available | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | Not Available | Not Available |
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Experimental Chromatographic Properties | Not Available |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatized |
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| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted GC-MS | Predicted GC-MS Spectrum - 2,3-Epoxyaflatoxin B1 GC-MS (Non-derivatized) - 70eV, Positive | splash10-0006-2091000000-3e7fccd8ab55a4b8afe0 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 2,3-Epoxyaflatoxin B1 GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 2,3-Epoxyaflatoxin B1 GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 10V, Positive-QTOF | splash10-004i-0019000000-fbf1af1a8568f56e50ef | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 20V, Positive-QTOF | splash10-004i-0096000000-33744bd389e8fca44efe | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 40V, Positive-QTOF | splash10-0fba-2390000000-ec31f9517f188988d668 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 10V, Negative-QTOF | splash10-004i-0029000000-0cb8f21eba1630039dc1 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 20V, Negative-QTOF | splash10-056r-0049000000-b7a57848a1bc684e5b2a | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 40V, Negative-QTOF | splash10-002f-9060000000-53f728c814df49ee82b8 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 10V, Positive-QTOF | splash10-004i-0009000000-a6e8d4715f87e5602d4e | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 20V, Positive-QTOF | splash10-004i-0009000000-d83f4a2899f653ea3031 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 40V, Positive-QTOF | splash10-01ti-0098000000-656b4b27c8e2657b0072 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 10V, Negative-QTOF | splash10-004i-0009000000-3eb691afb29ed57b3f5f | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 20V, Negative-QTOF | splash10-004i-0009000000-9595278280fed091bf1c | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2,3-Epoxyaflatoxin B1 40V, Negative-QTOF | splash10-056r-1197000000-ef7f7a710cfcfd7ccdd4 | 2021-09-24 | Wishart Lab | View Spectrum |
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General References | - Amici M, Cecarini V, Pettinari A, Bonfili L, Angeletti M, Barocci S, Biagetti M, Fioretti E, Eleuteri AM: Binding of aflatoxins to the 20S proteasome: effects on enzyme functionality and implications for oxidative stress and apoptosis. Biol Chem. 2007 Jan;388(1):107-17. [PubMed:17214555 ]
- He XY, Tang L, Wang SL, Cai QS, Wang JS, Hong JY: Efficient activation of aflatoxin B1 by cytochrome P450 2A13, an enzyme predominantly expressed in human respiratory tract. Int J Cancer. 2006 Jun 1;118(11):2665-71. [PubMed:16385575 ]
- Djoumbou-Feunang Y, Fiamoncini J, Gil-de-la-Fuente A, Greiner R, Manach C, Wishart DS: BioTransformer: a comprehensive computational tool for small molecule metabolism prediction and metabolite identification. J Cheminform. 2019 Jan 5;11(1):2. doi: 10.1186/s13321-018-0324-5. [PubMed:30612223 ]
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