5H-5-Methyl-6,7-dihydrocyclopentapyrazine
- Formula: C8H10N2
- Molecular weight: 134.1784
- IUPAC Standard InChI: InChI=1S/C8H10N2/c1-6-2-3-7-8(6)10-5-4-9-7/h4-6H,2-3H2,1H3
- IUPAC Standard InChIKey: YZEFQPIMXZVPKP-UHFFFAOYSA-N
- CAS Registry Number: 23747-48-0
- 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: 5H-Cyclopentapyrazine, 6,7-dihydro-5-methyl-; 5-Methyl-5H-cyclopenta[b]pyrazine, 6,7-dihydro; 5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine; 5-Methyl-(5H)-6,7-dihydrocyclo- pentapyrazine; 5-Methyl-6,7-dihydro-(5H)-cyclopentapyrazine; 5-Methyl -6,7-dihydrocyclopentapyrazine; 6,7-Dihydro-5-methyl-5H-cyclopentapyrazine; 5-methyl-dihydro-6,7-[5H]-cyclopenta[b]pyrazine; 5-Methyl-5H-cyclopenta[b]pyrazine
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Normal alkane RI, non-polar column, temperature ramp
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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
| Column type | Capillary | Capillary | Capillary |
|---|---|---|---|
| Active phase | SLB-5MS | OV-101 | HP-1 |
| Column length (m) | 10. | 10. | 25. |
| Carrier gas | Helium | Helium | |
| Substrate | |||
| Column diameter (mm) | 0.18 | 0.25 | 0.32 |
| Phase thickness (μm) | 0.18 | 0.52 | |
| Tstart (C) | 40. | 35. | 35. |
| Tend (C) | 295. | 225. | 250. |
| Heat rate (K/min) | 10. | 6. | 4. |
| Initial hold (min) | 1.5 | 3. | |
| Final hold (min) | |||
| I | 1149. | 1110. | 1103. |
| Reference | Risticevic, Carasek, et al., 2008 | Deibler, Acree, et al., 1998 | Ong and Acree, 1998 |
| Comment | 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.
Risticevic, Carasek, et al., 2008
Risticevic, S.; Carasek, E.; Pawliszyn, J.,
Headspace solid-phase microextraction-gas chromatographic-time-of-flight mass spectrometric methodology for geographical origin verification of coffee,
Anal. Chim. Acta, 2008, 617, 1-2, 72-84, https://doi.org/10.1016/j.aca.2008.04.009
. [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]
Ong and Acree, 1998
Ong, P.K.C.; Acree, T.E.,
Gas chromatography/olfactory analysis of lychee (Litchi chinesis Sonn.),
J. Agric. Food Chem., 1998, 46, 6, 2282-2286, https://doi.org/10.1021/jf9801318
. [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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