Pyrazine, 2,5-diethyl-
- Formula: C8H12N2
- Molecular weight: 136.1943
- IUPAC Standard InChI: InChI=1S/C8H12N2/c1-3-7-5-10-8(4-2)6-9-7/h5-6H,3-4H2,1-2H3
- IUPAC Standard InChIKey: WAVOLMBVDCRBGR-UHFFFAOYSA-N
- CAS Registry Number: 13238-84-1
- 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: 2,5-Diethylpyrazine
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Van Den Dool and Kratz RI, non-polar column, temperature ramp
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 |
|---|---|---|---|
| Active phase | BPX-5 | BPX-5 | DB-1 |
| Column length (m) | 50. | 50. | 60. |
| Carrier gas | He | He | N2 |
| Substrate | |||
| Column diameter (mm) | 0.32 | 0.32 | 0.25 |
| Phase thickness (μm) | 0.5 | 0.25 | 1. |
| Tstart (C) | 60. | 60. | 30. |
| Tend (C) | 250. | 250. | 200. |
| Heat rate (K/min) | 4. | 4. | 5. |
| Initial hold (min) | 5. | 5. | |
| Final hold (min) | 10. | 10. | 30. |
| I | 1091. | 1089. | 1074. |
| Reference | Ames, Guy, et al., 2001 | Ames, Guy, et al., 2001, 2 | Wu, Wang, et al., 2000 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Van Den Dool and Kratz RI, non-polar column, temperature ramp, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ames, Guy, et al., 2001
Ames, J.M.; Guy, R.C.E.; Kipping, G.J.,
Effect of pH and temperature on the formation of volatile compounds in cysteine/reducing sugar/starch mixtures during extrusion cooking,
J. Agric. Food Chem., 2001, 49, 4, 1885-1894, https://doi.org/10.1021/jf0012547
. [all data]
Ames, Guy, et al., 2001, 2
Ames, J.M.; Guy, R.C.E.; Kipping, G.J.,
Effect of pH, temperature, and moisture on the formation of volatile compounds in glycine/glucose model systems,
J. Agric. Food Chem., 2001, 49, 9, 4315-4323, https://doi.org/10.1021/jf010198m
. [all data]
Wu, Wang, et al., 2000
Wu, C.-M.; Wang, Z.; Wu, Q.H.,
Volatile compounds produced from monosodium glutamate in common food cooking,
J. Agric. Food Chem., 2000, 48, 6, 2438-2442, https://doi.org/10.1021/jf9907743
. [all data]
Notes
Go To: Top, Van Den Dool and Kratz RI, non-polar column, temperature ramp, References
- Symbols used in this document:
Tend Final temperature Tstart Initial temperature - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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