| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2012-09-11 19:04:29 UTC |
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| Update Date | 2022-03-07 02:54:02 UTC |
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| HMDB ID | HMDB0034270 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one |
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| Description | 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one belongs to the class of organic compounds known as kavalactones. These are lactones, which is structurally characterized by a benzene ring and a pyranone moiety, linked to each other to form a 4-methoxy-6-(2-phenylethyl)-2H-pyran-2-one skeleton. 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one has been detected, but not quantified in, beverages. This could make 5,6-dihydro-5-hydroxy-6-methyl-2H-pyran-2-one a potential biomarker for the consumption of these foods. Based on a literature review very few articles have been published on 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one. |
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| Structure | COC1=CC(=O)OC(\C=C\C2=CC=CC=C2)=C1 InChI=1S/C14H12O3/c1-16-13-9-12(17-14(15)10-13)8-7-11-5-3-2-4-6-11/h2-10H,1H3/b8-7+ |
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| Synonyms | | Value | Source |
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| 56-Dehydrokawain | ChEMBL, HMDB | | 56-Dehydrokawin | ChEMBL, HMDB | | (e)-4-Methoxy-6-(2-phenylethenyl)-2H-pyran-2-one | HMDB | | 2H-Pyran-2-one, 4-methoxy-6-(2-phenylethenyl)-, (e)- (9ci) | HMDB | | 4-Methoxy-6-(2-phenylethenyl)-(e)-2H-pyran-2-one | HMDB | | 4-Methoxy-6-(2-phenylethenyl)-2H-pyran-2-one | HMDB | | 4-Methoxy-6-styryl-(e)-2H-pyran-2-one | HMDB | | 4-Methoxy-6-styryl-2H-pyran-2-one | HMDB | | 4-Methoxy-6-[(e)-2-phenylethenyl]-2H-pyran-2-one | HMDB | | 4-Methoxy-6-[(e)-2-phenylvinyl]-2H-pyran-2-one | HMDB | | 5,6-Dehydrokawain | HMDB | | Demethoxyyangonin | HMDB | | Desmethoxyyangonin | HMDB | | DMY | HMDB | | 5,6-Dehydrokawain, (e)-isomer | MeSH, HMDB |
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| Chemical Formula | C14H12O3 |
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| Average Molecular Weight | 228.2433 |
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| Monoisotopic Molecular Weight | 228.07864425 |
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| IUPAC Name | 4-methoxy-6-[(E)-2-phenylethenyl]-2H-pyran-2-one |
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| Traditional Name | desmethoxyyangonin |
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| CAS Registry Number | 15345-89-8 |
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| SMILES | COC1=CC(=O)OC(\C=C\C2=CC=CC=C2)=C1 |
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| InChI Identifier | InChI=1S/C14H12O3/c1-16-13-9-12(17-14(15)10-13)8-7-11-5-3-2-4-6-11/h2-10H,1H3/b8-7+ |
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| InChI Key | DKKJNZYHGRUXBS-BQYQJAHWSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as kavalactones. These are lactones, which is structurally characterized by a benzene ring and a pyranone moiety, linked to each other to form a 4-methoxy-6-(2-phenylethyl)-2H-pyran-2-one skeleton. |
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| Kingdom | Organic compounds |
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| Super Class | Phenylpropanoids and polyketides |
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| Class | Kavalactones |
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| Sub Class | Not Available |
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| Direct Parent | Kavalactones |
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| Alternative Parents | |
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| Substituents | - Kavalactone
- Styrene
- Alkyl aryl ether
- Pyranone
- Benzenoid
- Pyran
- Monocyclic benzene moiety
- Heteroaromatic compound
- Vinylogous ester
- Lactone
- Oxacycle
- Organoheterocyclic compound
- Ether
- Hydrocarbon derivative
- Organooxygen compound
- Organic oxygen compound
- Organic oxide
- Aromatic heteromonocyclic compound
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| Molecular Framework | Aromatic heteromonocyclic 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 | |
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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 | 138 - 140 °C | 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 Retention Times Underivatized| Chromatographic Method | Retention Time | Reference |
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| Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. | 8.89 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 13.9598 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 1.05 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 2137.5 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 453.4 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 180.0 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 247.4 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 185.0 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 566.5 seconds | 40023050 | | BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 604.1 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 130.5 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 1326.6 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 432.3 seconds | 40023050 | | UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 1337.1 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 374.2 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 363.0 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 373.4 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 362.8 seconds | 40023050 | | Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 10.4 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatized |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted GC-MS | Predicted GC-MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one GC-MS (Non-derivatized) - 70eV, Positive | splash10-01tc-4970000000-5313253d81990e8f899d | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Experimental LC-MS/MS | LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one , positive-QTOF | splash10-0ufu-0930000000-c45b0f14494494198c6c | 2017-09-14 | HMDB team, MONA | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 10V, Positive-QTOF | splash10-004i-0190000000-69ef56e66ed3e2d76e85 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 20V, Positive-QTOF | splash10-004i-1790000000-646967bbc7e9bc2ac6fd | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 40V, Positive-QTOF | splash10-0fb9-3910000000-b624986462c7f4bc3a12 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 10V, Negative-QTOF | splash10-004i-0490000000-c2f830d977ce499b03bc | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 20V, Negative-QTOF | splash10-002f-9340000000-ee86bc62eed6a5fd4577 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 40V, Negative-QTOF | splash10-002f-8900000000-92e15b6d1ede62fa6571 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 10V, Negative-QTOF | splash10-004i-0090000000-f0e0fc28215258fdeb31 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 20V, Negative-QTOF | splash10-004i-0690000000-317865019d785558fd79 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 40V, Negative-QTOF | splash10-004i-9100000000-818ce39c4616027934e5 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 10V, Positive-QTOF | splash10-004i-0290000000-c05a8d84225eb8226a2f | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 20V, Positive-QTOF | splash10-004i-3970000000-057a25d403e514d8d120 | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,6-Dihydro-5-hydroxy-6-methyl-2H-pyran-2-one 40V, Positive-QTOF | splash10-004i-6900000000-8178f04b27a5dbcbba65 | 2021-09-25 | Wishart Lab | View Spectrum |
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