Pyrazine, methyl-
- Formula: C5H6N2
- Molecular weight: 94.1145
- IUPAC Standard InChIKey: CAWHJQAVHZEVTJ-UHFFFAOYSA-N
- CAS Registry Number: 109-08-0
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Methylpyrazine; 2-Methylpyrazine; Pyrazine, 2-methyl-
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Normal alkane RI, 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 | Carbowax 20M | DB-Wax | DB-Wax | HP-Innowax | HP-Innowax |
Column length (m) | 30. | 30. | 30. | 30. | |
Carrier gas | Hydrogen | Hydrogen | He | He | |
Substrate | |||||
Column diameter (mm) | 0.25 | 0.25 | 0.25 | 0.25 | |
Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | |
Program | not specified | 44 0C 3 0C/min -> 170 0C 8 0C/min -> 250 0C | not specified | 30C(5min) => 7C/min => 100C(5min) => 1C/min => 130C => 10C/min => 195C(45min) | 30C(5min) => 7C/min => 100C(5min) => 1C/min => 130C => 10C/min => 195C(45min) |
I | 1250. | 1271. | 1288. | 1279. | 1280. |
Reference | Dury-Brun, Fournier, et al., 2007 | Gonzalez-Rios, Suarez-Quiroz, et al., 2007 | Gonzalez-Rios, Suarez-Quiroz, et al., 2007 | Narain, Galvao, et al., 2007 | Narain, Galvao, et al., 2007 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | HP-Innowax | HP-Innowax | DB-Wax | Innowax | Carbowax 20M |
Column length (m) | 60. | 60. | 30. | 30. | |
Carrier gas | Helium | Helium | He | Helium | |
Substrate | |||||
Column diameter (mm) | 0.32 | 0.32 | 0.32 | 0.25 | |
Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.50 | |
Program | 40 0C (5 min) 4 0C/min -> 60 0C (5 min) 8 0C/min -> 250 0C (3 min) | not specified | 45C(5min) => 5C/min => 150C => 10C/min => 240C (10min) | 40 0C (2 min) 10 0C/min -> 100 0C 3 0C/min -> 160 0C 5 0C/min -> 260 0C (10 min) | not specified |
I | 1267. | 1274. | 1243. | 1278. | 1251. |
Reference | Viegas and Bassoli, 2007 | Viegas and Bassoli, 2007 | Krings, Zelena, et al., 2006 | Ito and Mori, 2004 | Vinogradov, 2004 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | CP-Wax 52CB | Carbowax 20M | Carbowax 20M | Supelcowax-10 | DB-Wax |
Column length (m) | 50. | 30. | |||
Carrier gas | He | ||||
Substrate | |||||
Column diameter (mm) | 0.32 | 0.32 | |||
Phase thickness (μm) | 1.2 | 0.25 | |||
Program | 40C(10min) => 3C/min => 190C => 10C/min => 250C(5min) | not specified | not specified | 50C(2min) => 7C/min => 140C => 17.5C/min => 230C | not specified |
I | 1277. | 1260. | 1260. | 1251. | 1259. |
Reference | Muresan, Eillebrecht, et al., 2000 | Vernin, Lageot, et al., 1998 | Vernin, Lageot, et al., 1998 | Chang, Seitz, et al., 1995 | Peng, Yang, et al., 1991 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary |
---|---|---|
Active phase | Carbowax 20M | Carbowax 400, Carbowax 20M, Carbowax 1540, Carbowax 4000, Superox 06, PEG 20M, etc. |
Column length (m) | 50. | |
Carrier gas | Hydrogen | |
Substrate | ||
Column diameter (mm) | 0.32 | |
Phase thickness (μm) | ||
Program | not specified | not specified |
I | 1235. | 1235. |
Reference | Mihara and Masuda, 1987 | Waggott and Davies, 1984 |
Comment | MSDC-RI | MSDC-RI |
References
Go To: Top, Normal alkane RI, 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.
Dury-Brun, Fournier, et al., 2007
Dury-Brun, C.; Fournier, N.; Pernin, K.; Guichard, E.; Voilley, A.,
A new approach to studying sponge cake aroma after storage in treated paper and plastic packaging by direct gas chromatography?olfactometry (D-GC-O),
Flavour Fragr. J., 2007, 22, 4, 255-264, https://doi.org/10.1002/ffj.1788
. [all data]
Gonzalez-Rios, Suarez-Quiroz, et al., 2007
Gonzalez-Rios, O.; Suarez-Quiroz, M.L.; Boulanger, R.; Barel, M.; Guyot, B.; Guiraud, J.-P.; Schorr-Galindo, S.,
Impact of ecological post-harvest processing of coffee aroma: II Roasted coffee.,
J. Food Composition Analysis, 2007, 20, 3-4, 297-307, https://doi.org/10.1016/j.jfca.2006.12.004
. [all data]
Narain, Galvao, et al., 2007
Narain, N.; Galvao, M.S.; Madruga, M.S.,
Volatile compounds captured through purge and trap technique in caja-umbu (Spondias sp.) fruits during maturation,
Food Chem., 2007, 102, 3, 726-731, https://doi.org/10.1016/j.foodchem.2006.06.003
. [all data]
Viegas and Bassoli, 2007
Viegas, M.C.; Bassoli, D.G.,
Utilizacao do indice de retencao linear para caracterizacao de compostos volateis em cafe soluvel utilizando GC-MS e coluna HP-Innowax,
Quim. Nova, 2007, 30, 8, 2031-2034, https://doi.org/10.1590/S0100-40422007000800040
. [all data]
Krings, Zelena, et al., 2006
Krings, U.; Zelena, K.; Wu, S.; Berger, R.G.,
Thin-layer high-vacuum distillation to isolate volatile flavour compounds of cocoa powder,
Eur. Food Res. Technol., 2006, 223, 5, 675-681, https://doi.org/10.1007/s00217-006-0252-x
. [all data]
Ito and Mori, 2004
Ito, K.; Mori, M.,
Formation of pyrazines in aqueous maltose/glucose/fructose-glutamide model systems upon heating at below 100 0C,
Food Sci. Technol. Res., 2004, 10, 2, 199-204, https://doi.org/10.3136/fstr.10.199
. [all data]
Vinogradov, 2004
Vinogradov, B.A.,
Production, composition, properties and application of essential oils, 2004, retrieved from http://viness.narod.ru. [all data]
Muresan, Eillebrecht, et al., 2000
Muresan, S.; Eillebrecht, M.A.J.L.; de Rijk, T.C.; de Jonge, H.G.; Leguijt, T.; Nijhuis, H.H.,
Aroma profile development of intermediate chocolate products. I. Volatile constituents of block-milk,
Food Chem., 2000, 68, 2, 167-174, https://doi.org/10.1016/S0308-8146(99)00171-5
. [all data]
Vernin, Lageot, et al., 1998
Vernin, G.; Lageot, C.; Parkanyi, C.,
GC-MS(EI, PCI, NCI, SIM, ITMS) Data Bank Analysis of Flavors and Fragrances. Kovats indices
in Instrumental Methods on Food and Beverage Analysis, D. Wetzel, G. Charalambous, ed(s)., Elsevier Sci. B.V., Amsterdam, 1998, 245-301. [all data]
Chang, Seitz, et al., 1995
Chang, C.-Y.; Seitz, L.M.; Chambers, E., IV,
Volatile Flavor Components of Breads Made from Hard Red Winter Wheat and Hard White Winter Wheat,
Cereal Chem., 1995, 72, 3, 237-242. [all data]
Peng, Yang, et al., 1991
Peng, C.T.; Yang, Z.C.; Ding, S.F.,
Prediction of rentention idexes. II. Structure-retention index relationship on polar columns,
J. Chromatogr., 1991, 586, 1, 85-112, https://doi.org/10.1016/0021-9673(91)80028-F
. [all data]
Mihara and Masuda, 1987
Mihara, S.; Masuda, H.,
Correlation between molecular structures and retention indices of pyrazines,
J. Chromatogr., 1987, 402, 309-317, https://doi.org/10.1016/0021-9673(87)80029-8
. [all data]
Waggott and Davies, 1984
Waggott, A.; Davies, I.W.,
Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]
Notes
Go To: Top, Normal alkane RI, polar column, custom temperature program, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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