| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2012-09-12 02:55:32 UTC |
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| Update Date | 2023-02-21 17:28:36 UTC |
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| HMDB ID | HMDB0041254 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | 2-Ethyl-3-methylpyrazine, 9CI |
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| Description | 2-Ethyl-3-methylpyrazine, 9CI belongs to the class of organic compounds known as pyrazines. Pyrazines are compounds containing a pyrazine ring, which is a six-member aromatic heterocycle, that consists of two nitrogen atoms (at positions 1 and 4) and four carbon atoms. 2-Ethyl-3-methylpyrazine, 9CI is a bread, corn, and earthy tasting compound. 2-Ethyl-3-methylpyrazine, 9CI has been detected, but not quantified in, several different foods, such as cereals and cereal products, potatos (Solanum tuberosum), eggs, tortilla chip, and fenugreeks (Trigonella foenum-graecum). This could make 2-ethyl-3-methylpyrazine, 9CI a potential biomarker for the consumption of these foods. Based on a literature review very few articles have been published on 2-Ethyl-3-methylpyrazine, 9CI. |
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| Structure | InChI=1S/C7H10N2/c1-3-7-6(2)8-4-5-9-7/h4-5H,3H2,1-2H3 |
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| Synonyms | | Value | Source |
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| 2-ETHYL-3-methyl pyrazine | HMDB | | 2-Ethyl-3-methyl-pyrazine | HMDB | | 2-Methyl-3-ethylpyrazine | HMDB | | 3-Ethyl-2-methylpyrazine | HMDB | | FEMA 3155 | HMDB | | Pyrazine, 3-ethyl-2-methyl | HMDB |
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| Chemical Formula | C7H10N2 |
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| Average Molecular Weight | 122.1677 |
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| Monoisotopic Molecular Weight | 122.08439833 |
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| IUPAC Name | 2-ethyl-3-methylpyrazine |
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| Traditional Name | pyrazine, 2-ethyl-3-methyl- |
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| CAS Registry Number | 15707-23-0 |
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| SMILES | CCC1=NC=CN=C1C |
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| InChI Identifier | InChI=1S/C7H10N2/c1-3-7-6(2)8-4-5-9-7/h4-5H,3H2,1-2H3 |
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| InChI Key | LNIMMWYNSBZESE-UHFFFAOYSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as pyrazines. Pyrazines are compounds containing a pyrazine ring, which is a six-member aromatic heterocycle, that consists of two nitrogen atoms (at positions 1 and 4) and four carbon atoms. |
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| Kingdom | Organic compounds |
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| Super Class | Organoheterocyclic compounds |
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| Class | Diazines |
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| Sub Class | Pyrazines |
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| Direct Parent | Pyrazines |
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| Alternative Parents | |
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| Substituents | - Pyrazine
- Heteroaromatic compound
- Azacycle
- Organic nitrogen compound
- Organopnictogen compound
- Hydrocarbon derivative
- Organonitrogen compound
- Aromatic heteromonocyclic compound
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| Molecular Framework | Aromatic heteromonocyclic compounds |
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| External Descriptors | Not Available |
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| Ontology |
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| Physiological effect | |
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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 | Not Available |
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| Experimental Molecular Properties | |
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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. | 2.22 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 8.5222 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 4.02 minutes | 32390414 |
Predicted Kovats Retention IndicesUnderivatized |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Experimental GC-MS | GC-MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI EI-B (Non-derivatized) | splash10-00ec-9400000000-21ce3f1c275e177e6431 | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | | Experimental GC-MS | GC-MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI EI-B (Non-derivatized) | splash10-00ec-9400000000-21ce3f1c275e177e6431 | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI GC-MS (Non-derivatized) - 70eV, Positive | splash10-05gi-9600000000-166a9ba47509c2ce42cd | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | MS | Mass Spectrum (Electron Ionization) | splash10-00di-9400000000-2a5e48d57dcba4269fd0 | 2015-03-01 | Not Available | 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 - 2-Ethyl-3-methylpyrazine, 9CI Orbitrap 3V, positive-QTOF | splash10-00di-0900000000-9c3e6d0a8c6fa5ded471 | 2020-07-22 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI Orbitrap 4V, positive-QTOF | splash10-00di-0900000000-79572640238a185d12bc | 2020-07-22 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI Orbitrap 5V, positive-QTOF | splash10-0ab9-0900000000-058e5e23755d8db9b2dc | 2020-07-22 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI Orbitrap 6V, positive-QTOF | splash10-0a4i-1900000000-5e98506dc168f399ff39 | 2020-07-22 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI Orbitrap 7V, positive-QTOF | splash10-0a4i-2900000000-3b2d8c4e4042e77ea364 | 2020-07-22 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI Orbitrap 9V, positive-QTOF | splash10-0a4i-7900000000-27c3ae9c3dff82f761ab | 2020-07-22 | HMDB team, MONA | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 10V, Positive-QTOF | splash10-00di-1900000000-bde72fd64f21c65f898d | 2016-06-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 20V, Positive-QTOF | splash10-00di-2900000000-f79c8a91fe510db35c1a | 2016-06-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 40V, Positive-QTOF | splash10-014l-9000000000-0a6e9dc60719aed29627 | 2016-06-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 10V, Negative-QTOF | splash10-00di-0900000000-fcb3b4203b07372c58aa | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 20V, Negative-QTOF | splash10-00di-1900000000-2b8f01d57a2cdfea3725 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 40V, Negative-QTOF | splash10-052f-9200000000-9b260ce63035e86a0606 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 10V, Negative-QTOF | splash10-00di-0900000000-f917b7eaee02fed474b8 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 20V, Negative-QTOF | splash10-00di-6900000000-41a71c3e14975b6c5428 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 40V, Negative-QTOF | splash10-0006-9000000000-2c7c328760904b073bcd | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 10V, Positive-QTOF | splash10-00di-3900000000-5b91b44a16894f4bae3d | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 20V, Positive-QTOF | splash10-00xs-9400000000-7edb3bff5bbab817059f | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Ethyl-3-methylpyrazine, 9CI 40V, Positive-QTOF | splash10-0ku6-9000000000-f9f3309a7d3383c650e0 | 2021-09-22 | Wishart Lab | View Spectrum |
NMR Spectra| Spectrum Type | Description | Deposition Date | Source | View |
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| Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum |
IR Spectra| Spectrum Type | Description | Deposition Date | Source | View |
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| Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+) | 2023-02-04 | FELIX lab | View Spectrum | | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+) | 2023-02-04 | FELIX lab | View Spectrum |
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