Pyrazine, 2,5-diethyl-
- Formula: C8H12N2
- Molecular weight: 136.1943
- 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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Normal alkane RI, non-polar column, temperature ramp
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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 | Ultra-1 | HP-5 | MDN-5 | MDN-5 | HP-5 |
Column length (m) | 50. | 50. | 60. | 60. | 50. |
Carrier gas | Helium | Helium | He | He | |
Substrate | |||||
Column diameter (mm) | 0.20 | 0.20 | 0.25 | 0.25 | 0.32 |
Phase thickness (μm) | 0.33 | 0.33 | 0.25 | 0.25 | 0.52 |
Tstart (C) | 50. | 50. | 40. | 40. | 35. |
Tend (C) | 280. | 280. | 270. | 270. | 250. |
Heat rate (K/min) | 2. | 10. | 4. | 4. | 2. |
Initial hold (min) | 4. | 4. | 15. | ||
Final hold (min) | 20. | 8.5 | 5. | 5. | 45. |
I | 1064. | 1090. | 1094. | 1095. | 1087. |
Reference | Du, Clery, et al., 2008 | Du, Clery, et al., 2008 | van Loon, Linssen, et al., 2005 | van Loon, Linssen, et al., 2005 | Boylston and Viniyard, 1998 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary |
---|---|---|---|
Active phase | DB-1 | DB-1 | OV-1 |
Column length (m) | 60. | 60. | 50. |
Carrier gas | Hydrogen | ||
Substrate | |||
Column diameter (mm) | 0.32 | 0.32 | 0.20 |
Phase thickness (μm) | 0.25 | 0.25 | |
Tstart (C) | 50. | 50. | 50. |
Tend (C) | 250. | 250. | 200. |
Heat rate (K/min) | 4. | 4. | 1. |
Initial hold (min) | |||
Final hold (min) | 35. | ||
I | 1062. | 1063. | 1048. |
Reference | Flath, Matsumoto, et al., 1989 | Flath, Matsumoto, et al., 1989 | Wu, Liou, et al., 1987 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Normal alkane 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.
Du, Clery, et al., 2008
Du, Z.; Clery, R.; Hammond, C.J.,
Volatile organic nitrogen-containing constituents in ambrette seed Abelmoschus moschatus Medik (Malvaceae),
J. Agric. Food Chem., 2008, 56, 16, 7388-7392, https://doi.org/10.1021/jf800958d
. [all data]
van Loon, Linssen, et al., 2005
van Loon, W.A.M.; Linssen, J.P.H.; Legger, A.; Posthumus, M.A.; Voragen, A.G.J.,
Identification and olfactometry of French fries flavour extracted at mouth conditions,
Food Chem., 2005, 90, 3, 417-425, https://doi.org/10.1016/j.foodchem.2004.05.005
. [all data]
Boylston and Viniyard, 1998
Boylston, T.D.; Viniyard, B.T.,
Isolation of volatile flavor compounds from peanut butter using purge-and-trap technique
in Instrumental Methods in Food and Beverage Analysis, D. Wetzel and G. Charalambous, ed(s)., 1998, 225-243. [all data]
Flath, Matsumoto, et al., 1989
Flath, R.A.; Matsumoto, K.E.; Binder, R.G.; Cunningham, R.T.; Mon, T.R.,
Effect of pH on the volatiles of hydrolyzed protein insect baits,
J. Agric. Food Chem., 1989, 37, 3, 814-819, https://doi.org/10.1021/jf00087a053
. [all data]
Wu, Liou, et al., 1987
Wu, C.-M.; Liou, S.-E.; Chang, Y.-H.; Chiang, W.,
Volatile compounds of the wax gourd (Benincasa hispida, Cogn) and a wax gourd beverage,
J. Food Sci., 1987, 52, 1, 132-134, https://doi.org/10.1111/j.1365-2621.1987.tb13988.x
. [all data]
Notes
Go To: Top, Normal alkane 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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