Pyrazine, methoxy-
- Formula: C5H6N2O
- Molecular weight: 110.1139
- IUPAC Standard InChI: InChI=1S/C5H6N2O/c1-8-5-4-6-2-3-7-5/h2-4H,1H3
- IUPAC Standard InChIKey: WKSXRWSOSLGSTN-UHFFFAOYSA-N
- CAS Registry Number: 3149-28-8
- 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: Methoxypyrazine; 2-Methoxypyrazine
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Phase change data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Robert L. Brown and Stephen E. Stein
Reduced pressure boiling point
| Tboil (K) | Pressure (bar) | Reference |
|---|---|---|
| 334.2 | 0.039 | Aldrich Chemical Company Inc., 1990 |
IR Spectrum
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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
Gas Phase Spectrum
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Additional Data
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| Owner | NIST Standard Reference Data Program Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | Sadtler Research Labs Under US-EPA Contract |
| State | gas |
Gas Chromatography
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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
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | OV-101 | 877. | Mihara and Masuda, 1987 | N2, 2. K/min; Column length: 50. m; Column diameter: 0.22 mm; Tstart: 80. C; Tend: 200. C |
| Capillary | OV-101 | 877. | Masuda and Mihara, 1986 | N2, 2. K/min; Column length: 50. m; Column diameter: 0.22 mm; Tstart: 80. C; Tend: 200. C |
| Capillary | OV-101 | 877. | Mihara and Enomoto, 1985 | N2, 2. K/min; Column length: 50. m; Column diameter: 0.22 mm; Tstart: 80. C; Tend: 200. C |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5 | 904. | Hartmann, 2003 | 30. m/0.25 mm/0.25 μm, He; Program: 50 C(1min) => 20C/min => 80C => 25C/min => 250C (3 min) |
| Capillary | CP-Sil 5 CB | 896. | Gijs, Chevanese, et al., 2002 | 50. m/0.32 mm/1.20 μm, Helium; Program: 36 0C 20 0C/min -> 85 0C 1 0C/min -> 145 0C 3 0C/min -> 250 0C (30 min) |
Normal alkane RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Carbowax 20M | 1306. | Mihara and Enomoto, 1985 | N2, 2. K/min; Column length: 50. m; Column diameter: 0.22 mm; Tstart: 80. C; Tend: 200. C |
Normal alkane RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Carbowax 20M | 1306. | Mihara and Masuda, 1987 | Program: not specified |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [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]
Masuda and Mihara, 1986
Masuda, H.; Mihara, S.,
Use of modified molecular connectivity indices to predict retention indices of monosubstituted alkyl, alkoxy, alkylthio, phenoxy and (phenylthio)pyrazines,
J. Chromatogr., 1986, 366, 373-377, https://doi.org/10.1016/S0021-9673(01)93485-5
. [all data]
Mihara and Enomoto, 1985
Mihara, S.; Enomoto, N.,
Calculation of retention indices of pyrazines on the basis of molecular structure,
J. Chromatogr., 1985, 324, 428-430, https://doi.org/10.1016/S0021-9673(01)81342-X
. [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]
Gijs, Chevanese, et al., 2002
Gijs, L.; Chevanese, F.; Jerkovic, V.; Collin, S.,
How low pH can intensify beta-damascenone and dimethyl trisulfide production through beer aging,
J. Agric. Food Chem., 2002, 50, 20, 5612-5616, https://doi.org/10.1021/jf020563p
. [all data]
Notes
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- Symbols used in this document:
Tboil Boiling point - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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