Pyrazine, 2-methoxy-3-(2-methylpropyl)-
- Formula: C9H14N2O
- Molecular weight: 166.2203
- IUPAC Standard InChI: InChI=1S/C9H14N2O/c1-7(2)6-8-9(12-3)11-5-4-10-8/h4-5,7H,6H2,1-3H3
- IUPAC Standard InChIKey: UXFSPRAGHGMRSQ-UHFFFAOYSA-N
- CAS Registry Number: 24683-00-9
- 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-Isobutyl-3-methoxypyrazine; 2-Methoxy-3-isobutylpyrazine; 2-Methoxy-3-(2-methyl-propyl) pyrazine; 3-Isobutyl-2-methoxypyrazine; 3-Methoxy-2-isobutylpyrazine; Pyrazine, 2-(2-methylpropyl)-3-methoxy; Pyrazine, 2-isobutyl-3-methoxy; Pyrazine, 2-methoxy, 3-isobutyl; Pyrazine, 3-methoxy-2-(2-methylpropyl)
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- Information on this page:
- Other data available:
- Options:
Normal alkane 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 | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | SE-54 | DB-5 MS | HP-5 MS | HP-5 | HP-5 |
| Column length (m) | 30. | 30. | 30. | 30. | 30. |
| Carrier gas | Helium | Helium | H2 | H2 | |
| Substrate | |||||
| Column diameter (mm) | 0.32 | 0.25 | 0.25 | 0.25 | 0.32 |
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Tstart (C) | 0. | 50. | 50. | 50. | 45. |
| Tend (C) | 200. | 220. | 230. | 280. | 230. |
| Heat rate (K/min) | 6. | 3. | 4. | 4. | 3. |
| Initial hold (min) | 2. | 2. | 4. | 2. | 1. |
| Final hold (min) | 70. | 10. | 10. | 10. | |
| I | 1175. | 1178. | 1187. | 1186. | 1173. |
| Reference | Laselan, Buettner, et al., 2009 | Shimizu, Imayoshi, et al., 2009 | Forero, Quijano, et al., 2008 | Pino, Sauri-Duch, et al., 2006 | Darriet, Pons, et al., 2002 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | DB-1 | DB-5 | DB-5MS | DB-5 | DB-5 |
| Column length (m) | 30. | 30. | 30. | 30. | 30. |
| Carrier gas | He | He | He | He | H2 |
| Substrate | |||||
| Column diameter (mm) | 0.25 | 0.32 | 0.32 | 0.32 | 0.32 |
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.5 |
| Tstart (C) | 40. | 40. | 40. | 40. | 60. |
| Tend (C) | 210. | 230. | 195. | 230. | 245. |
| Heat rate (K/min) | 5. | 6. | 5. | 6. | 3. |
| Initial hold (min) | 2. | 5. | 2. | 3. | |
| Final hold (min) | 5. | 40. | 5. | 20. | |
| I | 1163. | 1183. | 1174. | 1184. | 1195. |
| Reference | Kumazawa and Masuda, 2002 | Sanz, Czerny, et al., 2002 | Suriyaphan, Drake, et al., 2001 | Czerny and Grosch, 2000 | Kotseridis and Baumes, 2000 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | DB-5 | OV-101 | Ultra-1 | OV-101 | DB-5 |
| Column length (m) | 30. | 10. | 50. | 15. | 30. |
| Carrier gas | H2 | Helium | He | He | H2 |
| Substrate | |||||
| Column diameter (mm) | 0.32 | 0.25 | 0.2 | 0.32 | 0.3 |
| Phase thickness (μm) | 0.5 | 0.52 | |||
| Tstart (C) | 60. | 35. | 40. | 35. | 80. |
| Tend (C) | 245. | 225. | 240. | 250. | 250. |
| Heat rate (K/min) | 3. | 6. | 4. | 6. | 16. |
| Initial hold (min) | 3. | 3. | 3. | ||
| Final hold (min) | 20. | 10. | |||
| I | 1195. | 1160. | 1211. | 1175. | 1161. |
| Reference | Kotseridis and Baumes, 2000 | Deibler, Acree, et al., 1998 | Hashizume and Samuta, 1997 | Chisholm, Guiher, et al., 1995 | Spadone, Takeoka, et al., 1990 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|
| Active phase | HP-5 | HP-5 | OV-101 | DB-5 |
| Column length (m) | 50. | 50. | 50. | 60. |
| Carrier gas | H2 | H2 | H2 | |
| Substrate | ||||
| Column diameter (mm) | 0.3 | 0.3 | 0.22 | 0.32 |
| Phase thickness (μm) | ||||
| Tstart (C) | 80. | 80. | 80. | 40. |
| Tend (C) | 250. | 250. | 200. | 200. |
| Heat rate (K/min) | 16. | 16. | 2. | 2. |
| Initial hold (min) | ||||
| Final hold (min) | ||||
| I | 1161. | 1185. | 1166. | 1184. |
| Reference | Spadone, Takeoka, et al., 1990 | Spadone, Takeoka, et al., 1990 | Mihara and Masuda, 1988 | Gallois and Grimont, 1985 |
| Comment | MSDC-RI | 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.
Laselan, Buettner, et al., 2009
Laselan, P.; Buettner, A.; Christlbauer, M.,
Investigation of the retronasal perseption of palm wine (Elaeis guineensis) aroma by application of sensory analysis and exhaled odorant measurement (EXOM),
African J. of Food, Agriculture, Nutrition and development, 2009, 9, 2, 793-813. [all data]
Shimizu, Imayoshi, et al., 2009
Shimizu, Y.; Imayoshi, Y.; Kato, M.; Maeda, K.; Iwabuchi, H.; Shimomura, K.,
Volatiles from leaves of field-grown plants and shoot cultures of Gynura bicolor DC,
Flavour Fragr. J., 2009, 24, 5, 251-258, https://doi.org/10.1002/ffj.1938
. [all data]
Forero, Quijano, et al., 2008
Forero, M.D.; Quijano, C.E.; Pino, J.A.,
Volatile compounds of Chile pepper (Capsicum annuum L. var. glabriusculum) at two ripening stages,
Flavour Fragr. J., 2008, 24, 1, 25-30, https://doi.org/10.1002/ffj.1913
. [all data]
Pino, Sauri-Duch, et al., 2006
Pino, J.; Sauri-Duch, E.; Marbot, R.,
Changes in volatile compounds of Habanero chile pepper (Capsicum chinense Jack. cv. Habanero) at two ripening stages,
Food Chem., 2006, 94, 3, 394-398, https://doi.org/10.1016/j.foodchem.2004.11.040
. [all data]
Darriet, Pons, et al., 2002
Darriet, P.; Pons, M.; Henry, R.; Dumont, O.; Findeling, V.; Cartolaro, P.; Calonnec, A.; Dubourdieu, D.,
Impact odorants contributing to the fungus type aroma from grape berries contaminated by powdery mildew (Uncinula necator); incidence of enzymatic activities of the yeast Saccharomyces cerevisiae,
J. Agric. Food Chem., 2002, 50, 11, 3277-3282, https://doi.org/10.1021/jf011527d
. [all data]
Kumazawa and Masuda, 2002
Kumazawa, K.; Masuda, H.,
Identification of potent odorants in different green tea varieties using flavor dilution technique,
J. Agric. Food Chem., 2002, 50, 20, 5660-5663, https://doi.org/10.1021/jf020498j
. [all data]
Sanz, Czerny, et al., 2002
Sanz, C.; Czerny, M.; Cid, C.; Schieberle, P.,
Comparison of potent odorants in a filtered coffee brew and in an instant coffee beverage by aroma extract dilution analysis (AEDA),
Eur. Food Res. Technol., 2002, 214, 4, 299-302, https://doi.org/10.1007/s00217-001-0459-9
. [all data]
Suriyaphan, Drake, et al., 2001
Suriyaphan, O.; Drake, M.; Chen, X.Q.; Cadwallader, K.R.,
Characteristic aroma components of British farmhouse cheddar cheese,
J. Agric. Food Chem., 2001, 49, 3, 1382-1387, https://doi.org/10.1021/jf001121l
. [all data]
Czerny and Grosch, 2000
Czerny, M.; Grosch, W.,
Potent odorants of raw Arabica coffee. Their changes during roasting,
J. Agric. Food Chem., 2000, 48, 3, 868-872, https://doi.org/10.1021/jf990609n
. [all data]
Kotseridis and Baumes, 2000
Kotseridis, Y.; Baumes, R.,
Identification of impact odorants in Bordeaux red grape juice, in the commercial yeast used for its fermentation, and in the produced wine,
J. Agric. Food Chem., 2000, 48, 2, 400-406, https://doi.org/10.1021/jf990565i
. [all data]
Deibler, Acree, et al., 1998
Deibler, K.D.; Acree, T.E.; Lavin, E.H.,
Aroma analysis of coffrr brew by gas chromatography-oldfactometry,
Developments in Food Sci., 1998, 40, 69-78. [all data]
Hashizume and Samuta, 1997
Hashizume, K.; Samuta, T.,
Green odorants of grape cluster stem and their ability to cause a wine stemmy flavor,
J. Agric. Food Chem., 1997, 45, 4, 1333-1337, https://doi.org/10.1021/jf960635a
. [all data]
Chisholm, Guiher, et al., 1995
Chisholm, M.G.; Guiher, L.A.; Zaczkiewicz, S.M.,
Aroma characteristics of aged Vidal blanc wine,
Am. J. Enol. Vitic, 1995, 46, 1, 56-62. [all data]
Spadone, Takeoka, et al., 1990
Spadone, J.-C.; Takeoka, G.; Liardon, R.,
Analytical Investigation of Rio Off-Flavor in Green Coffee,
J. Agric. Food Chem., 1990, 38, 1, 226-233, https://doi.org/10.1021/jf00091a050
. [all data]
Mihara and Masuda, 1988
Mihara, S.; Masuda, H.,
Structure-odor relationships for disubstituted pyrazines,
J. Agric. Food Chem., 1988, 36, 6, 1242-1247, https://doi.org/10.1021/jf00084a029
. [all data]
Gallois and Grimont, 1985
Gallois, A.; Grimont, P.A.D.,
Pyrazines responsible for the potatolike odor produced by some Serratia and Cedecea strains,
Appl. Environ. Microbiol., 1985, 10, 1048-1051. [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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