2-Acetyl-3-ethylpyrazine

Formula: C₈H₁₀N₂O
Molecular weight: 150.1778
IUPAC Standard InChI: InChI=1S/C8H10N2O/c1-3-7-8(6(2)11)10-5-4-9-7/h4-5H,3H2,1-2H3
IUPAC Standard InChIKey: PPJSYGVFDJEMRP-UHFFFAOYSA-N
CAS Registry Number: 32974-92-8
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: Ethanone, 1-(3-ethylpyrazinyl)-; 1-(3-Ethyl-2-pyrazinyl)ethanone; 2-Ethyl-3-acetyl pyrazine; 3-Ethyl-2-acetylpyrazine; Pyrazine, 2-acetyl-3-ethyl; 1-(3-ethylpyrazinyl)ethan-1-one
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Other data available:
- IR Spectrum
- Mass spectrum (electron ionization)
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Gas Chromatography

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	Ultra-1	1142.	Du, Clery, et al., 2008	50. m/0.20 mm/0.33 μm, Helium, 2. K/min, 280. C @ 20. min; T_start: 50. C
Capillary	HP-5	1168.	Du, Clery, et al., 2008	50. m/0.20 mm/0.33 μm, Helium, 10. K/min, 280. C @ 8.5 min; T_start: 50. C
Capillary	SLB-5MS	1172.	Risticevic, Carasek, et al., 2008	10. m/0.18 mm/0.18 μm, Helium, 40. C @ 1.5 min, 10. K/min; T_end: 295. C
Capillary	OV-101	1138.	Mihara and Masuda, 1987	N2, 2. K/min; Column length: 50. m; Column diameter: 0.22 mm; T_start: 80. C; T_end: 200. C
Capillary	OV-101	1138.	Mihara and Enomoto, 1985	N2, 2. K/min; Column length: 50. m; Column diameter: 0.22 mm; T_start: 80. C; T_end: 200. C

Normal alkane RI, non-polar column, custom temperature program

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Column type	Active phase	I	Reference	Comment
Capillary	DB-5	1158.	Yu and Zhang, 2010	30. m/0.25 mm/0.25 μm; Program: 40 0C (5 min) 5 0C/min -> 260 0C 15 0C/min -> 280 0C (1 min)
Capillary	SLB-5MS	1158.	Risticevic, Carasek, et al., 2008	10. m/0.18 mm/0.18 μm, Helium; Program: not specified
Capillary	OV-1	1135.	El-Shazly and Hussein, 2004	He; Column length: 15. m; Column diameter: 0.317 mm; Program: 50C(4min) => 4C/min => 90C => 10C/min => 300C(10min)
Capillary	HP-5	1167.	Hartmann, 2003	30. m/0.25 mm/0.25 μm, He; Program: 50 C(1min) => 20C/min => 80C => 25C/min => 250C (3 min)
Capillary	HP-5	1170.	Hartmann, 2003	30. m/0.25 mm/0.25 μm, He; Program: 50 C(1min) => 20C/min => 80C => 25C/min => 250C (3 min)
Capillary	OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc.	1138.	Waggott and Davies, 1984	Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified

Normal alkane RI, polar column, temperature ramp

View large format table.

Column type	Active phase	I	Reference	Comment
Capillary	Carbowax 20M	1617.	Mihara and Enomoto, 1985	N2, 2. K/min; Column length: 50. m; Column diameter: 0.22 mm; T_start: 80. C; T_end: 200. C

Normal alkane RI, polar column, custom temperature program

View large format table.

Column type	Active phase	I	Reference	Comment
Capillary	Carbowax 400, Carbowax 20M, Carbowax 1540, Carbowax 4000, Superox 06, PEG 20M, etc.	1617.	Waggott and Davies, 1984	Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified

References

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Du, Clery, et al., 2008
Du, Z.; Clery, R.; Hammond, C.J., Volatile organic nitrogen-containing constituents in ambrette seed Abelmoschus moschatus Medik (Malvaceae), J. Agric. Food Chem., 2008, 56, 16, 7388-7392, https://doi.org/10.1021/jf800958d . [all data]

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]

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]

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]

Yu and Zhang, 2010
Yu, A.-N.; Zhang, A.-D., The effect of pH on the total formation of aroma compounds produced by hearting a model system containing L-ascorbic acid with L-threonine/L-serine, Food Chem., 2010, 119, 1, 214-219, https://doi.org/10.1016/j.foodchem.2009.06.026 . [all data]

El-Shazly and Hussein, 2004
El-Shazly, A.M.; Hussein, K.T., Chemical analysis and biological activities of the essential oil of Teucrium leucocladum Boiss. (Lamiaceae), Biochem. Syst. Ecol., 2004, 32, 7, 665-674, https://doi.org/10.1016/j.bse.2003.12.009 . [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]

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

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Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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