Pyridine, 2-methyl-
- Formula: C6H7N
- Molecular weight: 93.1265
- IUPAC Standard InChIKey: BSKHPKMHTQYZBB-UHFFFAOYSA-N
- CAS Registry Number: 109-06-8
- 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-Picoline; α-Methylpyridine; α-Picoline; o-Picoline; 2-Methylpyridine; Picoline, α; Rcra waste number U191; o-Methylpyridine; NSC 3409
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Normal alkane RI, 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 | HP-Innowax | DB-Wax | FFAP | TC-Wax | TC-Wax |
Column length (m) | 15. | 60. | 30. | 60. | 60. |
Carrier gas | Helium | Helium | N2 | N2 | He |
Substrate | |||||
Column diameter (mm) | 0.32 | 0.25 | 0.32 | 0.25 | 0.25 |
Phase thickness (μm) | 0.50 | 0.50 | 0.5 | 0.25 | 0.5 |
Tstart (C) | 40. | 40. | 35. | 70. | 40. |
Tend (C) | 250. | 210. | 320. | 220. | 230. |
Heat rate (K/min) | 3. | 2. | 4. | 3. | 3. |
Initial hold (min) | 5. | 5. | 8. | ||
Final hold (min) | 70. | 45. | 40. | ||
I | 1205. | 1240. | 1243. | 1240. | 1234. |
Reference | Puvipirom and Chaisei, 2012 | Moon and Shibamoto, 2009 | Nebesny, Budryn, et al., 2007 | Ishizaki, Tachihara, et al., 2005 | Ishikawa, Ito, et al., 2004 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | TC-Wax | RTX-Wax | HP-Wax | HP-Wax | HP-Wax |
Column length (m) | 60. | 60. | 60. | 60. | 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 | 0.5 | 0.5 | 0.5 | 0.5 |
Tstart (C) | 50. | 40. | 40. | 40. | 40. |
Tend (C) | 230. | 180. | 190. | 190. | 190. |
Heat rate (K/min) | 2. | 5. | 3. | 3. | 3. |
Initial hold (min) | 5. | 6. | 6. | 6. | |
Final hold (min) | 20. | ||||
I | 1234. | 1241. | 1239. | 1239. | 1239. |
Reference | Fukami, Ishiyama, et al., 2002 | Galindo-Cuspinera, Lubran, et al., 2002 | Sanz, Maeztu, et al., 2002 | Maeztu, Sanz, et al., 2001 | Sanz, Ansorena, et al., 2001 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | HP-Innowax | DB-Wax | HP-Innowax | PEG-20M | DB-Wax |
Column length (m) | 30. | 60. | 30. | 50. | 60. |
Carrier gas | He | He | N2 | Nitrogen | He |
Substrate | |||||
Column diameter (mm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
Phase thickness (μm) | 0.25 | 1. | 0.25 | 0.25 | |
Tstart (C) | 40. | 50. | 40. | 60. | 40. |
Tend (C) | 190. | 200. | 190. | 180. | 200. |
Heat rate (K/min) | 4. | 3. | 4. | 2. | 2. |
Initial hold (min) | 3. | 3. | 2. | ||
Final hold (min) | 10. | 40. | 10. | ||
I | 1219. | 1214. | 1219. | 1182. | 1216. |
Reference | Kubec, Drhová, et al., 1999 | Horiuchi, Umano, et al., 1998 | Kubec, Drhová, et al., 1998 | Kubota, Matsujage, et al., 1996 | Umano, Hagi, et al., 1995 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary |
---|---|---|
Active phase | Carbowax 20M | Carbowax 20M |
Column length (m) | 150. | 39. |
Carrier gas | He | H2 |
Substrate | ||
Column diameter (mm) | 0.64 | 0.30 |
Phase thickness (μm) | ||
Tstart (C) | 50. | 60. |
Tend (C) | 170. | 220. |
Heat rate (K/min) | 1. | 2. |
Initial hold (min) | 10. | |
Final hold (min) | 60. | |
I | 1220. | 1210. |
Reference | Seifert and King, 1982 | Liardon and Ledermann, 1980 |
Comment | MSDC-RI | MSDC-RI |
References
Go To: Top, Normal alkane RI, 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.
Puvipirom and Chaisei, 2012
Puvipirom, J.; Chaisei, S.,
Contribution of roasted grains and seeds in aroma of oleang (Thai coffee drink),
Int. Food Res. J., 2012, 19, 2, 583-588. [all data]
Moon and Shibamoto, 2009
Moon, J.-K.; Shibamoto, T.,
Role of roasting conditions in the profile of volatile flavor chemicals formed from coffee beans,
J. Agric. Food Chem., 2009, 57, 13, 5823-5831, https://doi.org/10.1021/jf901136e
. [all data]
Nebesny, Budryn, et al., 2007
Nebesny, E.; Budryn, G.; Kula, J.; Majda, T.,
The effect of roasting method on headspace composition of robusta coffee bean aroma,
Eur. Food Res. Technol., 2007, 225, 1, 9-19, https://doi.org/10.1007/s00217-006-0375-0
. [all data]
Ishizaki, Tachihara, et al., 2005
Ishizaki, S.; Tachihara, T.; Tamura, H.; Yanai, T.; Kitahara, T.,
Evaluation of odour-active compounds in roasted shrimp (Sergia lucens Hansen) by aroma extract dilution analysis,
Flavour Fragr. J., 2005, 20, 6, 562-566, https://doi.org/10.1002/ffj.1484
. [all data]
Ishikawa, Ito, et al., 2004
Ishikawa, M.; Ito, O.; Ishizaki, S.; Kurobayashi, Y.; Fujita, A.,
Solid-phase aroma concentrate extraction (SPACE ): a new headspace technique for more sensitive analysis of volatiles,
Flavour Fragr. J., 2004, 19, 3, 183-187, https://doi.org/10.1002/ffj.1322
. [all data]
Fukami, Ishiyama, et al., 2002
Fukami, K.; Ishiyama, S.; Yaguramaki, H.; Masuzawa, T.; Nabeta, Y.; Endo, K.; Shimoda, M.,
Identification of distinctive volatile compounds in fish sauce,
J. Agric. Food Chem., 2002, 50, 19, 5412-5416, https://doi.org/10.1021/jf020405y
. [all data]
Galindo-Cuspinera, Lubran, et al., 2002
Galindo-Cuspinera, V.; Lubran, M.B.; Rankin, S.A.,
Comparison of volatile compounds in water- and oil-soluble annatto (Bixa orellana L.) extracts,
J. Agric. Food Chem., 2002, 50, 7, 2010-2015, https://doi.org/10.1021/jf011325h
. [all data]
Sanz, Maeztu, et al., 2002
Sanz, C.; Maeztu, L.; Zapelena, M.J.; Bello, J.; Cid, C.,
Profiles of volatile compounds and sensory analysis of three blends of coffee: influence of different proportions of Arabica and Robusta and influence of roasting coffee with sugar,
J. Sci. Food Agric., 2002, 82, 8, 840-847, https://doi.org/10.1002/jsfa.1110
. [all data]
Maeztu, Sanz, et al., 2001
Maeztu, L.; Sanz, C.; Andueza, S.; de Peña, M.P.; Bello, J.; Cid, C.,
Characterization of espresso coffee aroma by static headspace GC-MS and sensory flavor profile,
J. Agric. Food Chem., 2001, 49, 11, 5437-5444, https://doi.org/10.1021/jf0107959
. [all data]
Sanz, Ansorena, et al., 2001
Sanz, C.; Ansorena, D.; Bello, J.; Cid, C.,
Optimizing headspace temperature and time sampling for identification of volatile compounds in ground roasted Arabica coffee,
J. Agric. Food Chem., 2001, 49, 3, 1364-1369, https://doi.org/10.1021/jf001100r
. [all data]
Kubec, Drhová, et al., 1999
Kubec, R.; Drhová, V.; Velísek, J.,
Volatile compounds thermally generated from S-propylcysteine and S-propylcysteine sulfoxide - aroma precursors of Allium vegetables,
J. Agric. Food Chem., 1999, 47, 3, 1132-1138, https://doi.org/10.1021/jf980974z
. [all data]
Horiuchi, Umano, et al., 1998
Horiuchi, M.; Umano, K.; Shibamoto, T.,
Analysis of volatile compounds formed from fish oil heated with cysteine and trimethylamine oxide,
J. Agric. Food Chem., 1998, 46, 12, 5232-5237, https://doi.org/10.1021/jf980482m
. [all data]
Kubec, Drhová, et al., 1998
Kubec, R.; Drhová, V.; Velísek, J.,
Thermal degradation of S-methylcysteine and its sulfoxide-important flavor precursors of Bassica and Allium vegetables,
J. Agric. Food Chem., 1998, 46, 10, 4334-4340, https://doi.org/10.1021/jf980379x
. [all data]
Kubota, Matsujage, et al., 1996
Kubota, K.; Matsujage, Y.; Sekiwa, Y.; Kobayashi, A.,
Identification of the characteristic volatile flavor compounds formed by cooking squid (Todarodes pacificus Steenstrup),
Food Sci. Technol., 1996, 2, 3, 163-166. [all data]
Umano, Hagi, et al., 1995
Umano, K.; Hagi, Y.; Nakahara, K.; Shyoji, A.; Shibamoto, T.,
Volatile chemicals formed in the headspace of a heated D-glucose/L-cysteine Maillard model system,
J. Agric. Food Chem., 1995, 43, 8, 2212-2218, https://doi.org/10.1021/jf00056a046
. [all data]
Seifert and King, 1982
Seifert, R.M.; King, A.D., Jr.,
Identification of some volatile constituents of Aspergillus clavatus,
J. Agric. Food Chem., 1982, 30, 4, 786-790, https://doi.org/10.1021/jf00112a044
. [all data]
Liardon and Ledermann, 1980
Liardon, R.; Ledermann, S.,
volatile components of fermented soya hydrolysate. II. Composition of basic fraction,
Z. Lebensm. Unters. Forsch., 1980, 170, 3, 208-213, https://doi.org/10.1007/BF01042542
. [all data]
Notes
Go To: Top, Normal alkane RI, 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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