| Record Information |
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| Version | 2.0 |
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| Created at | 2022-05-11 16:31:37 UTC |
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| Updated at | 2022-05-11 16:31:37 UTC |
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| NP-MRD ID | NP0086809 |
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| Secondary Accession Numbers | None |
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| Natural Product Identification |
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| Common Name | alpha-CEHC |
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| Description | Alpha-CEHC, also known as a-cehc, belongs to the class of organic compounds known as 1-benzopyrans. These are organic aromatic compounds that 1-benzopyran, a bicyclic compound made up of a benzene ring fused to a pyran, so that the oxygen atom is at the 1-position. Alpha-CEHC is an extremely weak basic (essentially neutral) compound (based on its pKa). Alpha-CEHC exists in all living organisms, ranging from bacteria to humans. Outside of the human body, alpha-CEHC has been detected, but not quantified in, milk (cow). This could make alpha-cehc a potential biomarker for the consumption of these foods. 2,5,7,8-Tetramethyl-2-(2'-carboxyethyl)-6-hydroxychroman has been identified as a major water-soluble metabolite of vitamin E, which circulates in the blood and is excreted with the urine. About one-third of the alpha-CEHC circulating in the blood is present as alpha-CEHC glucuronide (PMID: 10552913 ). alpha-CEHC was first documented in 1999 (PMID: 10552913). Alpha-Carboxyethyl hydrochroman has been identified as a major water-soluble metabolite of vitamin E, which circulates in the blood and is excreted in the urine (PMID: 12420750 ) (PMID: 12420750) (PMID: 11841923). |
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| Structure | CC1=C(O)C(C)=C2CCC(C)(CCC(O)=O)OC2=C1C InChI=1S/C16H22O4/c1-9-10(2)15-12(11(3)14(9)19)5-7-16(4,20-15)8-6-13(17)18/h19H,5-8H2,1-4H3,(H,17,18) |
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| Synonyms | | Value | Source |
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| a-CEHC | Generator | | Α-cehc | Generator | | 3-(6-Hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-1-benzopyran-2-yl)propanoate | HMDB | | α-Carboxyethyl hydrochroman | HMDB | | alpha-Carboxyethyl hydrochroman | Generator | | 2,5,7,8-Tetramethyl-2(2'-carboxyethyl)-6-hydroxychroman | HMDB | | 2,5,7,8-Tetramethyl-2-(β-carboxyethyl)-6-hydroxychroman | Generator | | 2,5,7,8-Tetramethyl-2-(beta-carboxyethyl)-6-hydroxychroman | HMDB | | 6-Hydroxy-2-(2-carboxylethyl)-2,5,7,8-tetramethylchroman | HMDB | | 6-Hydroxy-2-carboxylethyl-2,5,7,8-tetramethylchroman | HMDB | | alpha-CEHC | MeSH |
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| Chemical Formula | C16H22O4 |
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| Average Mass | 278.3435 Da |
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| Monoisotopic Mass | 278.15181 Da |
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| IUPAC Name | 3-(6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-1-benzopyran-2-yl)propanoic acid |
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| Traditional Name | α-cehc |
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| CAS Registry Number | Not Available |
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| SMILES | CC1=C(O)C(C)=C2CCC(C)(CCC(O)=O)OC2=C1C |
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| InChI Identifier | InChI=1S/C16H22O4/c1-9-10(2)15-12(11(3)14(9)19)5-7-16(4,20-15)8-6-13(17)18/h19H,5-8H2,1-4H3,(H,17,18) |
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| InChI Key | AXODOWFEFKOVSH-UHFFFAOYSA-N |
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| Experimental Spectra |
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| Not Available | | Predicted Spectra |
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| | Spectrum Type | Description | Depositor ID | Depositor Organization | Depositor | Deposition Date | View |
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| 1D NMR | 13C NMR Spectrum (1D, 25 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 252 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 50 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 75 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 101 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 126 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 151 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 176 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 201 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 226 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum |
| | Chemical Shift Submissions |
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| Not Available | | Species |
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| Species of Origin | |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as 1-benzopyrans. These are organic aromatic compounds that 1-benzopyran, a bicyclic compound made up of a benzene ring fused to a pyran, so that the oxygen atom is at the 1-position. |
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| Kingdom | Organic compounds |
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| Super Class | Organoheterocyclic compounds |
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| Class | Benzopyrans |
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| Sub Class | 1-benzopyrans |
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| Direct Parent | 1-benzopyrans |
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| Alternative Parents | |
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| Substituents | - 1-benzopyran
- Alkyl aryl ether
- Benzenoid
- Oxacycle
- Monocarboxylic acid or derivatives
- Ether
- Carboxylic acid
- Carboxylic acid derivative
- Organic oxygen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Carbonyl group
- Aromatic heteropolycyclic compound
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| Molecular Framework | Aromatic heteropolycyclic compounds |
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| External Descriptors | |
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| Physical Properties |
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| State | Not Available |
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| Experimental 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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| Predicted Properties | |
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