Pyrazine, 2-ethyl-6-methyl-
- Formula: C7H10N2
- Molecular weight: 122.1677
- IUPAC Standard InChIKey: RAFHQTNQEZECFL-UHFFFAOYSA-N
- CAS Registry Number: 13925-03-6
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: 2-Ethyl-6-methylpyrazine; 2-Methyl-6-ethylpyrazine; 2,6-Methylethylpyrazine; Pyrazine, 6-ethyl-2-methyl
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- Other data available:
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Normal alkane RI, polar column, custom temperature program
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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 | Capillary |
---|---|---|---|---|---|
Active phase | DB-FFAP | DB-FFAP | DB-Wax | DB-Wax | HP-Innowax |
Column length (m) | 30. | 30. | 30. | 30. | 60. |
Carrier gas | Helium | Helium | Hydrogen | Hydrogen | Helium |
Substrate | |||||
Column diameter (mm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.32 |
Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
Program | 50 0C 2 0C/min -> 100 0C (5 min) 5 0C/min -> 250 0C | not specified | 44 0C 3 0C/min -> 170 0C 8 0C/min -> 250 0C | not specified | 40 0C (5 min) 4 0C/min -> 60 0C (5 min) 8 0C/min -> 250 0C (3 min) |
I | 1364. | 1381. | 1391. | 1411. | 1389. |
Reference | Mebazaa, Mahmoudi, et al., 2009 | Mebazaa, Mahmoudi, et al., 2009 | Gonzalez-Rios, Suarez-Quiroz, et al., 2007 | Gonzalez-Rios, Suarez-Quiroz, et al., 2007 | Viegas and Bassoli, 2007 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary |
---|---|---|---|
Active phase | HP-Innowax | DB-Wax | Carbowax 20M |
Column length (m) | 60. | 30. | |
Carrier gas | Helium | He | |
Substrate | |||
Column diameter (mm) | 0.32 | 0.32 | |
Phase thickness (μm) | 0.25 | 0.25 | |
Program | not specified | 45C(5min) => 5C/min => 150C => 10C/min => 240C (10min) | not specified |
I | 1388. | 1353. | 1353. |
Reference | Viegas and Bassoli, 2007 | Krings, Zelena, et al., 2006 | Mihara and Masuda, 1987 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Normal alkane RI, 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.
Mebazaa, Mahmoudi, et al., 2009
Mebazaa, R.; Mahmoudi, A.; Fouchet, M.; Dos Santos, M.; Kamissoko, F.; Nafti, A.; Ben Cheikh, R.; Rega, B.; Camel, V.,
Characterization of volatile compounds in Tunisian fenugreek seeds,
Food Chem., 2009, 115, 4, 1326-1336, https://doi.org/10.1016/j.foodchem.2009.01.066
. [all data]
Gonzalez-Rios, Suarez-Quiroz, et al., 2007
Gonzalez-Rios, O.; Suarez-Quiroz, M.L.; Boulanger, R.; Barel, M.; Guyot, B.; Guiraud, J.-P.; Schorr-Galindo, S.,
Impact of ecological post-harvest processing of coffee aroma: II Roasted coffee.,
J. Food Composition Analysis, 2007, 20, 3-4, 297-307, https://doi.org/10.1016/j.jfca.2006.12.004
. [all data]
Viegas and Bassoli, 2007
Viegas, M.C.; Bassoli, D.G.,
Utilizacao do indice de retencao linear para caracterizacao de compostos volateis em cafe soluvel utilizando GC-MS e coluna HP-Innowax,
Quim. Nova, 2007, 30, 8, 2031-2034, https://doi.org/10.1590/S0100-40422007000800040
. [all data]
Krings, Zelena, et al., 2006
Krings, U.; Zelena, K.; Wu, S.; Berger, R.G.,
Thin-layer high-vacuum distillation to isolate volatile flavour compounds of cocoa powder,
Eur. Food Res. Technol., 2006, 223, 5, 675-681, https://doi.org/10.1007/s00217-006-0252-x
. [all data]
Mihara and Masuda, 1987
Mihara, S.; Masuda, H.,
Correlation between molecular structures and retention indices of pyrazines,
J. Chromatogr., 1987, 402, 309-317, https://doi.org/10.1016/0021-9673(87)80029-8
. [all data]
Notes
Go To: Top, Normal alkane RI, polar column, custom temperature program, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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