Pyrazine, 2-ethenyl-6-methyl-
- Formula: C7H8N2
- Molecular weight: 120.1518
- IUPAC Standard InChI: InChI=1S/C7H8N2/c1-3-7-5-8-4-6(2)9-7/h3-5H,1H2,2H3
- IUPAC Standard InChIKey: KZXOOWGVLDEHDT-UHFFFAOYSA-N
- CAS Registry Number: 13925-09-2
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Pyrazine, 2-methyl-6-vinyl-; 2-Methyl-6-vinylpyrazine; 2-Vinyl-6-methylpyrazine; 2-ethenyl-6-methyl pyrazine; 6-methyl-2-vinylpyrazine
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- Other data available:
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Normal alkane RI, non-polar column, custom temperature program
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
| Column type | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|
| Active phase | HP-5 MS | HP-5 | HP-5MS | CP Sil 5 CB |
| Column length (m) | 30. | 30. | 30. | 50. |
| Carrier gas | Helium | He | He | |
| Substrate | ||||
| Column diameter (mm) | 0.25 | 0.25 | 0.25 | 0.32 |
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 1.2 |
| Program | 50 0C (2 min) 20 0C/min -> 80 0C (1 min) 20 0C -> 100 0C (1 min) 30 0C/min -> 230 0C (2 min) | 50C(2min) => 2C/min => 140C => 10C/min => 280C (10min) | 50C(2min) => 20C/min => 80C (1min) => 20C/min => 100C(1min) => 30C/min => 230C(3min) | 36C => 20C/min => 85C => 1C/min => 145C=3C/min => 250C(30min) |
| I | 1016. | 1016. | 1016. | 992. |
| Reference | Wan Aida, Ho, et al., 2008 | Characterization of Pyrazines in Some Chinese Liquors and Their Approximate Concentrations, 2007 | Ho, Wan Aida, et al., 2007 | Counet, Callemien, et al., 2002 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Normal alkane RI, non-polar column, custom temperature program, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Wan Aida, Ho, et al., 2008
Wan Aida, W.M.; Ho, C.W.; Maskat, M.Y.; Osman, H.,
Relating descriptive sensory analysis to gas chromatography / mass spectrometry of palm sugars using partial least squares regression,
ASEAN Food J., 2008, 15, 1, 35-45. [all data]
Characterization of Pyrazines in Some Chinese Liquors and Their Approximate Concentrations, 2007
Characterization of Pyrazines in Some Chinese Liquors; Their Approximate Concentrations,
W. Fan; Y. Xu; Y. Zhang,
J. Agric. Food Chem., 2007, 55, 9956-9962. [all data]
Ho, Wan Aida, et al., 2007
Ho, C.W.; Wan Aida, W.M.; Maskat, M.Y.; Osman, H.,
Changes in volatile compounds of palm sap (Arenga pinnata) during the heating process for production of palm sugar,
Food Chem., 2007, 102, 4, 1156-1162, https://doi.org/10.1016/j.foodchem.2006.07.004
. [all data]
Counet, Callemien, et al., 2002
Counet, C.; Callemien, D.; Ouwerx, C.; Collin, S.,
Use of gas chromatography-olfactometry to identify key odorant compounds in dark chocolate. Comparison of samples before and after conching,
J. Agric. Food Chem., 2002, 50, 8, 2385-2391, https://doi.org/10.1021/jf0114177
. [all data]
Notes
Go To: Top, Normal alkane RI, non-polar column, custom temperature program, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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