Pyrazine
- Formula: C4H4N2
- Molecular weight: 80.0880
- IUPAC Standard InChIKey: KYQCOXFCLRTKLS-UHFFFAOYSA-N
- CAS Registry Number: 290-37-9
- 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: p-Diazine; Paradiazine; Piazine; 1,4-Diazabenzene; 1,4-Diazine
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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 | DB-Wax | DB-Wax | HP-Innowax | HP-Innowax | Innowax |
Column length (m) | 30. | 30. | 60. | 60. | 30. |
Carrier gas | Hydrogen | Hydrogen | Helium | Helium | Helium |
Substrate | |||||
Column diameter (mm) | 0.25 | 0.25 | 0.32 | 0.32 | 0.25 |
Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.50 |
Program | 44 0C 3 0C/min -> 170 0C 8 0C/min -> 250 0C | not specified | 40 0C (5 min) 4 0C/min -> 60 0C (5 min) 8 0C/min -> 250 0C (3 min) | not specified | 40 0C (2 min) 10 0C/min -> 100 0C 3 0C/min -> 160 0C 5 0C/min -> 260 0C (10 min) |
I | 1212. | 1194. | 1214. | 1196. | 1222. |
Reference | Gonzalez-Rios, Suarez-Quiroz, et al., 2007 | Gonzalez-Rios, Suarez-Quiroz, et al., 2007 | Viegas and Bassoli, 2007 | Viegas and Bassoli, 2007 | Ito and Mori, 2004 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | Carbowax 20M | CP-Wax 52CB | DB-Wax | Carbowax 20M | Carbowax 20M |
Column length (m) | 50. | ||||
Carrier gas | |||||
Substrate | |||||
Column diameter (mm) | 0.32 | ||||
Phase thickness (μm) | 1.2 | ||||
Program | not specified | 40C(10min) => 3C/min => 190C => 10C/min => 250C(5min) | not specified | not specified | not specified |
I | 1194. | 1218. | 1224. | 1179. | 1194. |
Reference | Vinogradov, 2004 | Muresan, Eillebrecht, et al., 2000 | Peng, Yang, et al., 1991 | Mihara and Masuda, 1987 | Shibamoto, 1987 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary |
---|---|
Active phase | 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 |
I | 1196. |
Reference | Waggott and Davies, 1984 |
Comment | 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.
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]
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]
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]
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]
Shibamoto, 1987
Shibamoto, T.,
Retention Indices in Essential Oil Analysis
in Capillary Gas Chromatography in Essential Oil Analysis, Sandra, P.; Bicchi, C., ed(s)., Hutchig Verlag, Heidelberg, New York, 1987, 259-274. [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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