Record Information |
---|
Version | 5.0 |
---|
Status | Detected but not Quantified |
---|
Creation Date | 2012-09-11 17:53:48 UTC |
---|
Update Date | 2023-02-21 17:23:04 UTC |
---|
HMDB ID | HMDB0033112 |
---|
Secondary Accession Numbers | |
---|
Metabolite Identification |
---|
Common Name | Methylpyrazine |
---|
Description | Methylpyrazine 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. Methylpyrazine is a chocolate, cocoa, and green tasting compound. Methylpyrazine is found, on average, in the highest concentration within kohlrabis (Brassica oleracea var. gongylodes). Methylpyrazine has also been detected, but not quantified in, several different foods, such as black tea, cocoa beans (Theobroma cacao), pulses, tortilla, and taco. This could make methylpyrazine a potential biomarker for the consumption of these foods. Based on a literature review a significant number of articles have been published on Methylpyrazine. |
---|
Structure | InChI=1S/C5H6N2/c1-5-4-6-2-3-7-5/h2-4H,1H3 |
---|
Synonyms | Value | Source |
---|
2-Methylpyrazine | ChEMBL, HMDB | 2-Methyl-1,4-diazine | HMDB | 2-Methyl-pyrazine | HMDB | FEMA 3309 | HMDB | Methyl-pyrazine | HMDB |
|
---|
Chemical Formula | C5H6N2 |
---|
Average Molecular Weight | 94.1145 |
---|
Monoisotopic Molecular Weight | 94.053098202 |
---|
IUPAC Name | 2-methylpyrazine |
---|
Traditional Name | 2-methylpyrazine |
---|
CAS Registry Number | 109-08-0 |
---|
SMILES | CC1=NC=CN=C1 |
---|
InChI Identifier | InChI=1S/C5H6N2/c1-5-4-6-2-3-7-5/h2-4H,1H3 |
---|
InChI Key | CAWHJQAVHZEVTJ-UHFFFAOYSA-N |
---|
Chemical Taxonomy |
---|
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. |
---|
Kingdom | Organic compounds |
---|
Super Class | Organoheterocyclic compounds |
---|
Class | Diazines |
---|
Sub Class | Pyrazines |
---|
Direct Parent | Pyrazines |
---|
Alternative Parents | |
---|
Substituents | - Pyrazine
- Heteroaromatic compound
- Azacycle
- Organic nitrogen compound
- Organopnictogen compound
- Hydrocarbon derivative
- Organonitrogen compound
- Aromatic heteromonocyclic compound
|
---|
Molecular Framework | Aromatic heteromonocyclic compounds |
---|
External Descriptors | Not Available |
---|
Ontology |
---|
Physiological effect | |
---|
Disposition | |
---|
Process | Not Available |
---|
Role | |
---|
Physical Properties |
---|
State | Liquid |
---|
Experimental Molecular Properties | |
---|
Experimental Chromatographic Properties | Not Available |
---|
Predicted Molecular Properties | |
---|
Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatized |
---|
| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
---|
Experimental GC-MS | GC-MS Spectrum - Methylpyrazine EI-B (Non-derivatized) | splash10-00kf-9000000000-f4b825c3875738792e2e | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylpyrazine EI-B (Non-derivatized) | splash10-0006-9000000000-a2eaa2efdc4e61c4335c | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylpyrazine EI-B (Non-derivatized) | splash10-00kf-9000000000-f4b825c3875738792e2e | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylpyrazine EI-B (Non-derivatized) | splash10-0006-9000000000-a2eaa2efdc4e61c4335c | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Methylpyrazine GC-MS (Non-derivatized) - 70eV, Positive | splash10-0006-9000000000-5dc367205165bdb5e26b | 2017-09-01 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Methylpyrazine 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 |
---|
Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 13V, positive-QTOF | splash10-0002-9000000000-ecf22d809547e0aa7c74 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 14V, positive-QTOF | splash10-0002-9000000000-95eb788b8eb6fb98508f | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 15V, positive-QTOF | splash10-0002-9000000000-b43f311f11184d777085 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 16V, positive-QTOF | splash10-0002-9000000000-946d74a794831f522066 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 17V, positive-QTOF | splash10-0002-9000000000-e6383fe00ef8729dab75 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 18V, positive-QTOF | splash10-0002-9000000000-7fc30af3a009f1ecb4c7 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 19V, positive-QTOF | splash10-0002-9000000000-165d2190e702945cd673 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 20V, positive-QTOF | splash10-00kb-9000000000-d223778f302300346362 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 22V, positive-QTOF | splash10-00kb-9000000000-3c72d9dfc975dcf4f023 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 24V, positive-QTOF | splash10-00kb-9000000000-5216700f2c02c5bbf000 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 26V, positive-QTOF | splash10-0fr5-9000000000-6f9c7151cf25d400d3fe | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 28V, positive-QTOF | splash10-0006-9000000000-ea4dca874e350890121c | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 30V, positive-QTOF | splash10-0f6x-9000000000-8ce2cfe7708d3edb58a6 | 2020-07-22 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylpyrazine n/a 32V, positive-QTOF | splash10-0f6x-9000000000-79d81f2d825ea784509e | 2020-07-22 | HMDB team, MONA | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 10V, Positive-QTOF | splash10-0002-9000000000-230ba79fd9ecad00b0bf | 2016-06-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 20V, Positive-QTOF | splash10-0002-9000000000-4181abbf3d44e1850911 | 2016-06-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 40V, Positive-QTOF | splash10-0uxu-9000000000-341947b86bc29df72c05 | 2016-06-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 10V, Negative-QTOF | splash10-0006-9000000000-2513e2138b5b9c757ce4 | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 20V, Negative-QTOF | splash10-0006-9000000000-d1f0ae6b396dc25638cd | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 40V, Negative-QTOF | splash10-0006-9000000000-bc38ece616b22363b02d | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 10V, Positive-QTOF | splash10-0002-9000000000-69782e89d083a3a49f6c | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 20V, Positive-QTOF | splash10-0fr6-9000000000-ab2962c87b20e872dcca | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 40V, Positive-QTOF | splash10-0uxr-9000000000-c706f4f6128bb6f144d7 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 10V, Negative-QTOF | splash10-0006-9000000000-0ba9c53048a888159d8d | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylpyrazine 20V, Negative-QTOF | splash10-0006-9000000000-0ba9c53048a888159d8d | 2021-09-22 | Wishart Lab | View Spectrum |
NMR SpectraSpectrum Type | Description | Deposition Date | Source | View |
---|
Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum |
IR SpectraSpectrum Type | Description | Deposition Date | Source | View |
---|
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 |
|
---|
General References | - Divine RD, Sommer D, Lopez-Hernandez A, Rankin SA: Short communication: Evidence for methylglyoxal-mediated browning of Parmesan cheese during low temperature storage. J Dairy Sci. 2012 May;95(5):2347-54. doi: 10.3168/jds.2011-4828. [PubMed:22541463 ]
- Magi E, Bono L, Di Carro M: Characterization of cocoa liquors by GC-MS and LC-MS/MS: focus on alkylpyrazines and flavanols. J Mass Spectrom. 2012 Sep;47(9):1191-7. doi: 10.1002/jms.3034. [PubMed:22972787 ]
- Qin P, Ma T, Wu L, Shan F, Ren G: Identification of tartary buckwheat tea aroma compounds with gas chromatography-mass spectrometry. J Food Sci. 2011 Aug;76(6):S401-7. doi: 10.1111/j.1750-3841.2011.02223.x. Epub 2011 Jun 8. [PubMed:22417522 ]
- Montague SA, Mathew D, Carlson JR: Similar odorants elicit different behavioral and physiological responses, some supersustained. J Neurosci. 2011 May 25;31(21):7891-9. doi: 10.1523/JNEUROSCI.6254-10.2011. [PubMed:21613503 ]
- Dhachapally N, Kalevaru VN, Radnik J, Martin A: Tuning the surface composition of novel metal vanadates and its effect on the catalytic performance. Chem Commun (Camb). 2011 Aug 7;47(29):8394-6. doi: 10.1039/c1cc12117k. Epub 2011 Jun 24. [PubMed:21701755 ]
- Morkan IA, Celik D, Morkan AU, Guven K: Synthesis, crystal structure, spectroscopic investigations, thermal behavior and DFT calculations of pentacarbonyl(2-methylpyrazine)chromium(0). Spectrochim Acta A Mol Biomol Spectrosc. 2012 Jul;93:47-52. doi: 10.1016/j.saa.2012.02.037. Epub 2012 Feb 24. [PubMed:22465766 ]
- Nicolotti L, Cordero C, Bicchi C, Rubiolo P, Sgorbini B, Liberto E: Volatile profiling of high quality hazelnuts (Corylus avellana L.): chemical indices of roasting. Food Chem. 2013 Jun 1;138(2-3):1723-33. doi: 10.1016/j.foodchem.2012.11.086. Epub 2012 Nov 29. [PubMed:23411304 ]
- Yabuki M, Scott DJ, Briand L, Taylor AJ: Dynamics of odorant binding to thin aqueous films of rat-OBP3. Chem Senses. 2011 Sep;36(7):659-71. doi: 10.1093/chemse/bjr037. Epub 2011 May 2. [PubMed:21536621 ]
- Treesuwan W, Hirao H, Morokuma K, Hannongbua S: Characteristic vibration patterns of odor compounds from bread-baking volatiles upon protein binding: density functional and ONIOM study and principal component analysis. J Mol Model. 2012 May;18(5):2227-40. doi: 10.1007/s00894-011-1227-9. Epub 2011 Sep 27. [PubMed:21952829 ]
- El-sharkawy RG, El-din AS, El-din H Etaiw S: Kinetics and mechanism of the heterogeneous catalyzed oxidative decolorization of Acid-Blue 92 using bimetallic metal-organic frameworks. Spectrochim Acta A Mol Biomol Spectrosc. 2011 Sep;79(5):1969-75. doi: 10.1016/j.saa.2011.05.101. Epub 2011 Jun 6. [PubMed:21703918 ]
- (). Yannai, Shmuel. (2004) Dictionary of food compounds with CD-ROM: Additives, flavors, and ingredients. Boca Raton: Chapman & Hall/CRC.. .
|
---|