Pyrazine, 2,3-dimethyl-
- Formula: C6H8N2
- Molecular weight: 108.1411
- IUPAC Standard InChI: InChI=1S/C6H8N2/c1-5-6(2)8-4-3-7-5/h3-4H,1-2H3
- IUPAC Standard InChIKey: OXQOBQJCDNLAPO-UHFFFAOYSA-N
- CAS Registry Number: 5910-89-4
- 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: 2,3-Dimethylpyrazine
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Van Den Dool and Kratz 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 | Capillary |
|---|---|---|---|---|---|
| Active phase | ZB-5 | CP Sil 8 CB | CP-Sil8 | DB-5MS | CP-Sil 8CB-MS |
| Column length (m) | 30. | 60. | 60. | 30. | 60. |
| Carrier gas | He | He | He | He | He |
| Substrate | |||||
| Column diameter (mm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Program | 50C(1min) => 3C/min => 209C => 20C/min => 280C | 40C(2min) => 4C/min => 200C => 10C/min => 250C(15min) | 40C(2min) => 4C/min => 200C => 10C/min => 250C (15min) | 60 0C (3 min) 2 K/min -> 220 0C 5 K/min -> 250 0C (15 min) | 0C(5min) => 40C/min => 40C (2min) => 4C/min => 280C |
| I | 930. | 930. | 930. | 918. | 925. |
| Reference | Lu, Hao, et al., 2005 | Martin and Ames, 2001 | Martin and Ames, 2001, 2 | Boulanger and Crouzet, 2000 | Elmore, Mottram, et al., 2000 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | DB-5 | BPX-5 | BPX-5 | BPX-5 | DB-5 |
| Column length (m) | 50. | 50. | 50. | 50. | 30. |
| Carrier gas | He | He | He | He | He |
| Substrate | |||||
| Column diameter (mm) | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 |
| Phase thickness (μm) | 0.5 | 0.5 | 0.5 | 0.5 | 1.0 |
| Program | oC(5min) => 60C/min => 60C (5min) => 4C/min => 250C | 0C(5min) => 40C/min => 40C(2min) => 4C/min => 280C | OC (5min) => 60C/min => 60C(5min) => 4C/min => 250C | OC => 60C/min => 60C(5min) => 4C/min => 250C(20min) | 5 0C (0.5 min) -> (1 min) 60 0C (5 min) 4 0C/min -> 250 0C |
| I | 932. | 937. | 932. | 934. | 915. |
| Reference | Parker, Hassell, et al., 2000 | Elmore, Mottram, et al., 1999 | Bredie, Mottram, et al., 1998 | Owens J.D., Allagheny N., et al., 1997 | Beal and Mottram, 1994 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary |
|---|---|---|
| Active phase | DB-1 | DB-1 |
| Column length (m) | 60. | 60. |
| Carrier gas | He | He |
| Substrate | ||
| Column diameter (mm) | 0.32 | 0.32 |
| Phase thickness (μm) | 0.25 | 0.25 |
| Program | -40C => 40C/min => 40C => 2C/min => 260C | -40C => 40C/min => 40C => 2C/min => 260C |
| I | 896. | 896. |
| Reference | Kuo, Zhang, et al., 1989 | Kuo, Zhang, et al., 1989 |
| Comment | MSDC-RI | MSDC-RI |
References
Go To: Top, Van Den Dool and Kratz 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.
Lu, Hao, et al., 2005
Lu, C.-Y.; Hao, Z.; Payne, R.; Ho, C.-T.,
Effects of water content on volatile generation and peptide degradation in the Maillard reaction of glycine, diglycine, and triglycine,
J. Agric. Food Chem., 2005, 53, 16, 6443-6447, https://doi.org/10.1021/jf050534p
. [all data]
Martin and Ames, 2001
Martin, F.L.; Ames, J.M.,
Formation of Strecker aldehydes and pyrazines in a fried potato model system,
J. Agric. Food Chem., 2001, 49, 8, 3885-3892, https://doi.org/10.1021/jf010310g
. [all data]
Martin and Ames, 2001, 2
Martin, F.L.; Ames, J.M.,
Comparison of flavor compounds of potato chips fried in palmolein and silicone fluid,
J. Amer. Oil Chem. Soc., 2001, 78, 8, 863-866, https://doi.org/10.1007/s11746-001-0356-2
. [all data]
Boulanger and Crouzet, 2000
Boulanger, R.; Crouzet, J.,
Free and bound flavour components of Amazonian fruits: 2. cupuacu volatile compounds,
Flavour Fragr. J., 2000, 15, 4, 251-257, https://doi.org/10.1002/1099-1026(200007/08)15:4<251::AID-FFJ905>3.0.CO;2-2
. [all data]
Elmore, Mottram, et al., 2000
Elmore, J.S.; Mottram, D.S.; Enser, M.; Wood, J.D.,
The effects of diet and breed on the volatile compounds of cooked lamb,
Meat Sci., 2000, 55, 2, 149-159, https://doi.org/10.1016/S0309-1740(99)00137-0
. [all data]
Parker, Hassell, et al., 2000
Parker, J.K.; Hassell, G.M.E.; Mottram, D.S.; Guy, R.C.E.,
Sensory and instrumental analyses of volatiles generated during the extrusion cooking of oat flours,
J. Agric. Food Chem., 2000, 48, 8, 3497-3506, https://doi.org/10.1021/jf991302r
. [all data]
Elmore, Mottram, et al., 1999
Elmore, J.S.; Mottram, D.S.; Enser, M.; Wood, J.D.,
Effect of the polyunsaturated fatty acid composition of beef muscle on the profile of aroma volatiles,
J. Agric. Food Chem., 1999, 47, 4, 1619-1625, https://doi.org/10.1021/jf980718m
. [all data]
Bredie, Mottram, et al., 1998
Bredie, W.L.P.; Mottram, D.S.; Guy, R.C.E.,
Aroma volatiles generated during extrusion cooking of maize flour,
J. Agric. Food Chem., 1998, 46, 4, 1479-1487, https://doi.org/10.1021/jf9708857
. [all data]
Owens J.D., Allagheny N., et al., 1997
Owens J.D.; Allagheny N.; Kipping G.; Ames J.M.,
Formation of volatile compounds during Bacillus subtilis fermentation of soya beans,
J. Sci. Food Agric., 1997, 74, 1, 132-140, https://doi.org/10.1002/(SICI)1097-0010(199705)74:1<132::AID-JSFA779>3.0.CO;2-8
. [all data]
Beal and Mottram, 1994
Beal, A.D.; Mottram, D.S.,
Compounds contributing to the characteristic aroma of malted barley,
J. Agric. Food Chem., 1994, 42, 12, 2880-2884, https://doi.org/10.1021/jf00048a043
. [all data]
Kuo, Zhang, et al., 1989
Kuo, M.-C.; Zhang, Y.; Hartman, T.G.; Rosen, R.T.; Ho, C.-T.,
Selective purge-and-trap method for the analysis of volatile pyrazines,
J. Agric. Food Chem., 1989, 37, 4, 1020-1022, https://doi.org/10.1021/jf00088a045
. [all data]
Notes
Go To: Top, Van Den Dool and Kratz RI, non-polar column, custom temperature program, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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