Pyrazine, 2-methoxy-3-(1-methylpropyl)-
- Formula: C9H14N2O
- Molecular weight: 166.2203
- IUPAC Standard InChI: InChI=1S/C9H14N2O/c1-4-7(2)8-9(12-3)11-6-5-10-8/h5-7H,4H2,1-3H3
- IUPAC Standard InChIKey: QMQDJVIJVPEQHE-UHFFFAOYSA-N
- CAS Registry Number: 24168-70-5
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: 2-sec-Butyl-3-Methoxypyrazine; 2-Methoxy-3-sec-butylpyrazine; 2-Methoxy-3-(1-methyl-propyl) pyrazine; 3-sec-Butyl-2-methoxypyrazine; Pyrazine, 2-methoxy, 3-sec-butyl; Pyrazine, 3-methoxy-2-(1-methylpropyl)
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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 | Capillary |
|---|---|---|---|---|---|
| Active phase | SE-54 | HP-5 | HP-5 | HP-5 | RTX-5 |
| Column length (m) | 30. | 30. | 30. | 30. | |
| Carrier gas | Helium | He | He | ||
| Substrate | |||||
| Column diameter (mm) | 0.32 | 0.25 | 0.25 | 0.25 | |
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | |
| Program | 35 0C (2 min) 10 0C/min -> 50 0C (2 min) 6 0C/min -> 250 0C | 50 C(1min) => 20C/min => 80C => 25C/min => 250C (3 min) | 50 C(1min) => 20C/min => 80C => 25C/min => 250C (3 min) | 40C (5min) => 10C/min => 80C => 20C/min => 230C (5min) | not specified |
| I | 1175. | 1176. | 1180. | 1180. | 1175. |
| Reference | Christlbauer and Schieberle, 2009 | Hartmann, 2003 | Hartmann, 2003 | Hartmann, McNair, et al., 2002 | Masanetz, Guth, et al., 1998 |
| Comment | MSDC-RI | 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.
Christlbauer and Schieberle, 2009
Christlbauer, M.; Schieberle, P.,
Characterization of the key aroma compounds in beef and pork vegetable gravies a la chef by application of the aroma extract dilution analysis,
J. Agric. Food Chem., 2009, 57, 19, 9114-9112, https://doi.org/10.1021/jf9023189
. [all data]
Hartmann, 2003
Hartmann, P.J.,
The effect of wine matrix ingredients on 3-alkyl-2-methoxypyrazines measurements by headspace solid-phase microextraction (HS-SPME), Master's Thesis, Virginia Tech., Blacksburg, Va., 2003, 30. [all data]
Hartmann, McNair, et al., 2002
Hartmann, P.J.; McNair, H.M.; Zoecklein, B.W.,
Measurement of 3-alkyl-2-methoxypyrazine by headspace solid-phase microextraction in spiked model wines,
Am. J. Enol. Vitic, 2002, 53, 4, 285-288. [all data]
Masanetz, Guth, et al., 1998
Masanetz, C.; Guth, H.; Grosch, W.,
Fishy and hay-like off-flavours of dry spinach,
Z. Lebensm. Unters. Forsch. A, 1998, 206, 2, 108-113, https://doi.org/10.1007/s002170050224
. [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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