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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Mass spectrum (electron ionization)
Go To: Top, Gas Chromatography, 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
Spectrum
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Additional Data
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| Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | Japan AIST/NIMC Database- Spectrum MS-IW-4190 |
| NIST MS number | 237290 |
Gas Chromatography
Go To: Top, Mass spectrum (electron ionization), 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
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | BPX-5 | 1158. | Ames, Guy, et al., 2001 | 50. m/0.32 mm/0.5 μm, He, 60. C @ 5. min, 4. K/min, 250. C @ 10. min |
| Capillary | BPX-5 | 1163. | Ames, Guy, et al., 2001, 2 | 50. m/0.32 mm/0.25 μm, He, 60. C @ 5. min, 4. K/min, 250. C @ 10. min |
| Capillary | DB-1 | 1111. | Kim, 2001 | 60. m/0.32 mm/1. μm, He, 40. C @ 5. min, 2. K/min; Tend: 220. C |
| Capillary | BPX-5 | 1157. | Ames, Defaye, et al., 1997 | 50. m/0.325 mm/0.5 μm, He, 50. C @ 2. min, 4. K/min, 250. C @ 10. min |
| Capillary | HP-1 | 1113. | Zhang, Dorjpalam, et al., 1992 | 50. m/0.32 mm/1.5 μm, 2. K/min, 220. C @ 30. min; Tstart: 40. C |
| Capillary | SE-30 | 1106. | Misharina, Golovnya, et al., 1991 | 50. m/0.32 mm/0.25 μm, 4. K/min; Tstart: 50. C; Tend: 240. C |
Van Den Dool and Kratz RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-Wax | 1616. | Kim, 2001 | 60. m/0.25 mm/0.25 μm, He, 40. C @ 5. min, 2. K/min, 200. C @ 30. min |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SLB-5MS | 1149. | Risticevic, Carasek, et al., 2008 | 10. m/0.18 mm/0.18 μm, Helium, 40. C @ 1.5 min, 10. K/min; Tend: 295. C |
| Capillary | OV-101 | 1110. | Deibler, Acree, et al., 1998 | 10. m/0.25 mm/0.52 μm, Helium, 35. C @ 3. min, 6. K/min; Tend: 225. C |
| Capillary | HP-1 | 1103. | Ong and Acree, 1998 | 4. K/min; Column length: 25. m; Column diameter: 0.32 mm; Tstart: 35. C; Tend: 250. C |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SLB-5MS | 1139. | Risticevic, Carasek, et al., 2008 | 10. m/0.18 mm/0.18 μm, Helium; Program: not specified |
| Capillary | HP-5MS | 1147. | Ho, Wan Aida, et al., 2007 | 30. m/0.25 mm/0.25 μm, He; Program: 50C(2min) => 20C/min => 80C (1min) => 20C/min => 100C(1min) => 30C/min => 230C(3min) |
| Capillary | SE-54 | 1145. | Blank, Sen, et al., 1992 | Program: not specified |
Normal alkane RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | FFAP | 1643. | Budryn, Nebesny, et al., 2011 | 30. m/0.32 mm/0.50 μm, Nitrogen, 35. C @ 5. min, 4. K/min, 250. C @ 45. min |
| Capillary | FFAP | 1643. | Nebesny, Budryn, et al., 2007 | 30. m/0.32 mm/0.5 μm, N2, 35. C @ 5. min, 4. K/min, 320. C @ 45. min |
| Capillary | DB-Wax | 1596. | Akiyama, Murakami, et al., 2003 | 60. m/0.32 mm/0.25 μm, He, 6. K/min, 230. C @ 20. min; Tstart: 40. C |
| Capillary | HP-Wax | 1667. | Sanz, Maeztu, et al., 2002 | 60. m/0.25 mm/0.5 μm, He, 40. C @ 6. min, 3. K/min; Tend: 190. C |
| Capillary | HP-Wax | 1667. | Sanz, Ansorena, et al., 2001 | 60. m/0.25 mm/0.5 μm, He, 40. C @ 6. min, 3. K/min; Tend: 190. C |
| Capillary | HP-Innowax | 1594. | Ong and Acree, 1998 | 4. K/min; Column length: 25. m; Column diameter: 0.32 mm; Tstart: 35. C; Tend: 250. C |
| Capillary | DB-Wax | 1605. | Wong and Bernhard, 1988 | He, 70. C @ 8. min, 2. K/min; Column length: 30. m; Column diameter: 0.25 mm; Tend: 160. C |
| Packed | Carbowax | 1603. | Schieberle and Grosch, 1983 | He, Chromosorb G AW DMCS, 4. K/min; Column length: 3. m; Tstart: 60. C; Tend: 180. C |
Normal alkane RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-Innowax | 1636. | Viegas and Bassoli, 2007 | 60. m/0.32 mm/0.25 μm, Helium; Program: 40 0C (5 min) 4 0C/min -> 60 0C (5 min) 8 0C/min -> 250 0C (3 min) |
| Capillary | HP-Innowax | 1630. | Viegas and Bassoli, 2007 | 60. m/0.32 mm/0.25 μm, Helium; Program: not specified |
References
Go To: Top, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ames, Guy, et al., 2001
Ames, J.M.; Guy, R.C.E.; Kipping, G.J.,
Effect of pH and temperature on the formation of volatile compounds in cysteine/reducing sugar/starch mixtures during extrusion cooking,
J. Agric. Food Chem., 2001, 49, 4, 1885-1894, https://doi.org/10.1021/jf0012547
. [all data]
Ames, Guy, et al., 2001, 2
Ames, J.M.; Guy, R.C.E.; Kipping, G.J.,
Effect of pH, temperature, and moisture on the formation of volatile compounds in glycine/glucose model systems,
J. Agric. Food Chem., 2001, 49, 9, 4315-4323, https://doi.org/10.1021/jf010198m
. [all data]
Kim, 2001
Kim, J.S.,
Einfluss der Temperatur beim Rösten von Sesam auf Aroma und antioxidative Eigenschaften des Öls, PhD Thesis, Technischen Universität Berlin zur Erlangung des akademischen Grades, Berlin, 2001, 151. [all data]
Ames, Defaye, et al., 1997
Ames, J.M.; Defaye, A.B.; Bates, L.,
The effect of pH on the volatiles formed in an extruded starch-glucose-lysine model system,
Food Chem., 1997, 58, 4, 323-327, https://doi.org/10.1016/S0308-8146(96)00171-9
. [all data]
Zhang, Dorjpalam, et al., 1992
Zhang, Y.; Dorjpalam, B.; Ho, C.-T.,
Contribution of peptides to volatile formation in the Maillard reaction of casein hydrolysate with glucose,
J. Agric. Food Chem., 1992, 40, 12, 2467-2471, https://doi.org/10.1021/jf00024a026
. [all data]
Misharina, Golovnya, et al., 1991
Misharina, T.A.; Golovnya, R.V.; Yakovleva, V.N.; Vitt, S.V.,
Pyrazines formed in model glycerin-water systems,
Russ. Chem. Bull. (Engl. Transl.), 1991, 40, 9, 1742-1748, https://doi.org/10.1007/BF00960396
. [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]
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]
Ho, Wan Aida, et al., 2007
Ho, C.W.; Wan Aida, W.M.; Maskat, M.Y.; Osman, H.,
Changes in volatile compounds of palm sap (Arenga pinnata) during the heating process for production of palm sugar,
Food Chem., 2007, 102, 4, 1156-1162, https://doi.org/10.1016/j.foodchem.2006.07.004
. [all data]
Blank, Sen, et al., 1992
Blank, I.; Sen, A.; Grosch, W.,
Potent odorants of the roasted powder and brew of Arabica coffee,
Z. Lebensm. Unters Forsch., 1992, 195, 3, 239-245, https://doi.org/10.1007/BF01202802
. [all data]
Budryn, Nebesny, et al., 2011
Budryn, G.; Nebesny, E.; Kula, J.; Majda, T.; Krysiak, W.,
HS-SPME/GC/MS Profiles of convectively and microwave roasted Ivory Coast Robusta coffee brews,
Czech. J. Food Sci., 2011, 29, 2, 151-160. [all data]
Nebesny, Budryn, et al., 2007
Nebesny, E.; Budryn, G.; Kula, J.; Majda, T.,
The effect of roasting method on headspace composition of robusta coffee bean aroma,
Eur. Food Res. Technol., 2007, 225, 1, 9-19, https://doi.org/10.1007/s00217-006-0375-0
. [all data]
Akiyama, Murakami, et al., 2003
Akiyama, M.; Murakami, K.; Ohtani, N.; Iwatsuki, K.; Sotoyama, K.; Wada, A.; Tokuno, K.; Iwabuchi, H.; Tanaka, K.,
Analysis of volatile compounds released during the grinding of roasted coffee beans using solid-phase microextraction,
J. Agric. Food Chem., 2003, 51, 7, 1961-1969, https://doi.org/10.1021/jf020724p
. [all data]
Sanz, Maeztu, et al., 2002
Sanz, C.; Maeztu, L.; Zapelena, M.J.; Bello, J.; Cid, C.,
Profiles of volatile compounds and sensory analysis of three blends of coffee: influence of different proportions of Arabica and Robusta and influence of roasting coffee with sugar,
J. Sci. Food Agric., 2002, 82, 8, 840-847, https://doi.org/10.1002/jsfa.1110
. [all data]
Sanz, Ansorena, et al., 2001
Sanz, C.; Ansorena, D.; Bello, J.; Cid, C.,
Optimizing headspace temperature and time sampling for identification of volatile compounds in ground roasted Arabica coffee,
J. Agric. Food Chem., 2001, 49, 3, 1364-1369, https://doi.org/10.1021/jf001100r
. [all data]
Wong and Bernhard, 1988
Wong, J.M.; Bernhard, R.A.,
Effect of nitrogen source on pyrazine formation,
J. Agric. Food Chem., 1988, 36, 1, 123-129, https://doi.org/10.1021/jf00079a032
. [all data]
Schieberle and Grosch, 1983
Schieberle, P.; Grosch, W.,
Identifizierung von Aromastoffen aus der Kruste von Roggenbrot,
Z. Lebensm. Unters. Forsch., 1983, 177, 3, 173-180, https://doi.org/10.1007/BF01146791
. [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]
Notes
Go To: Top, Mass spectrum (electron ionization), Gas Chromatography, References
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