Pyrazine, 2,5-dimethyl-3-(2-methylpropyl)-
- Formula: C10H16N2
- Molecular weight: 164.2474
- IUPAC Standard InChI: InChI=1S/C10H16N2/c1-7(2)5-10-9(4)11-6-8(3)12-10/h6-7H,5H2,1-4H3
- IUPAC Standard InChIKey: KEJOEQXAEQCAKT-UHFFFAOYSA-N
- CAS Registry Number: 32736-94-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Pyrazine, 3-isobutyl-2,5-dimethyl-; 2,5-Dimethyl-3-isobutylpyrazine; 3-Isobutyl-2,5-dimethylpyrazine; 2,5-Dimethyl-3-(2-methylpropyl)pyrazine; 2,5-Dimethyl-6-isobutylpyrazine; 3,6-Dimethyl-2-isobutylpyrazine
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- Other data available:
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Normal alkane RI, non-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 |
|---|---|---|---|
| Active phase | DB-5 | BPX-5 | DB-5MS |
| Column length (m) | 60. | 25. | 50. |
| Carrier gas | He | He | He |
| Substrate | |||
| Column diameter (mm) | 0.32 | 0.22 | 0.25 |
| Phase thickness (μm) | 0.25 | ||
| Tstart (C) | 50. | 50. | 40. |
| Tend (C) | 250. | 320. | 220. |
| Heat rate (K/min) | 4. | 5. | 5. |
| Initial hold (min) | 5. | 5. | 5. |
| Final hold (min) | 5. | ||
| I | 1208. | 1207. | 1208. |
| Reference | Fadel, Mageed, et al., 2006 | Dickschat, Reichenbach, et al., 2005 | Welty, Marshall, et al., 2001 |
| 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.
Fadel, Mageed, et al., 2006
Fadel, H.H.M.; Mageed, M.A.A.; Samad, A.K.M.E.A.; Lotfy, S.N.,
Cocoa substitute: Evaluation of sensory qualities and flavour stability,
Eur. Food Res. Technol., 2006, 223, 1, 125-131, https://doi.org/10.1007/s00217-005-0162-3
. [all data]
Dickschat, Reichenbach, et al., 2005
Dickschat, J.S.; Reichenbach, H.; Wagner-Döbler, I.; Schulz, S.,
Novel Pyrazines from the Myxobacterium Chondromyces crocatus and Marine Bacteria,
Eur. J. Org. Chem., 2005, 2005, 19, 4141-4153, https://doi.org/10.1002/ejoc.200500280
. [all data]
Welty, Marshall, et al., 2001
Welty, W.M.; Marshall, R.T.; Grün, I.U.; Ellersieck, M.R.,
Effects of Milk Fat, Cocoa Butter, or Selected Fat Replacers on Flavor Volatiles of Chocolate Ice Cream,
J. Dairy Sci., 2001, 84, 1, 21-30, https://doi.org/10.3168/jds.S0022-0302(01)74447-5
. [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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