2-Butenoic acid, 2-methyl-
- Formula: C5H8O2
- Molecular weight: 100.1158
- IUPAC Standard InChI: InChI=1S/C5H8O2/c1-3-4(2)5(6)7/h3H,1-2H3,(H,6,7)
- IUPAC Standard InChIKey: UIERETOOQGIECD-UHFFFAOYSA-N
- CAS Registry Number: 13201-46-2
- 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. - Stereoisomers:
- Other names: Crotonic acid, 2-methyl-; 2-Methyl-2-butenoic acid; CH3CH=C(CH3)COOH; α-Methylcrotonic acid; 2-Methylcrotonic acid
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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
Van Den Dool and Kratz RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-5 | 921. | Beal and Mottram, 1994 | 30. m/0.32 mm/1.0 μm, He; Program: 5 0C (0.5 min) -> (1 min) 60 0C (5 min) 4 0C/min -> 250 0C |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | RSL-200 | 934. | Ngassoum, Jirovetz, et al., 2001 | 30. m/0.32 mm/0.25 μm, H2, 40. C @ 5. min, 6. K/min, 280. C @ 5. min |
Normal alkane RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | CP Wax 52 CB | 1851. | Birtic, Ginies, et al., 2009 | 30. m/0.32 mm/0.50 μm, Helium, 40. C @ 2. min, 4. K/min, 230. C @ 15. min |
| Capillary | HP-Innowax | 1835. | Wijaya, Ulrich, et al., 2005 | 15. m/0.25 mm/1. μm, 45. C @ 5. min, 10. K/min, 210. C @ 5. min |
Normal alkane RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Innowax FSC | 1808. | Bardakci, Demirci, et al., 2012 | 60. m/0.25 mm/0.25 μm, Helium; Program: 60 0C (10 min) 4 0C/min -> 220 0C 1 0C/min -> 240 0C |
| Capillary | HP-Innowax FSC | 1808. | Viljoen, Subramoney, et al., 2005 | 60. m/0.25 mm/0.25 μm, He; Program: 60C(10min) => 4C/min => 220C(10min) => 1C/min => 240C |
References
Go To: Top, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Beal and Mottram, 1994
Beal, A.D.; Mottram, D.S.,
Compounds contributing to the characteristic aroma of malted barley,
J. Agric. Food Chem., 1994, 42, 12, 2880-2884, https://doi.org/10.1021/jf00048a043
. [all data]
Ngassoum, Jirovetz, et al., 2001
Ngassoum, M.B.; Jirovetz, L.; Buchbauer, G.,
SPME/GC/MS analysis of headspace aroma compounds of the Cameroonian fruit Tetrapleura tetraptera (Thonn.) Taub.,
Eur. Food Res. Technol., 2001, 213, 1, 18-21, https://doi.org/10.1007/s002170100330
. [all data]
Birtic, Ginies, et al., 2009
Birtic, S.; Ginies, C.; Causse, M.; Renard, C.M.G.C.; Page, D.,
Changes in volatiles and glycosides during fruit maturartion of two contrasted tomato (Solanum lycopersicum) lines,
J. Agric. Food Chem., 2009, 57, 2, 591-598, https://doi.org/10.1021/jf8023062
. [all data]
Wijaya, Ulrich, et al., 2005
Wijaya, C.H.; Ulrich, D.; Lestari, R.; Schippel, K.; Ebert, G.,
Identification of potent odorants in different cultivars of snake fruit [Salacca zalacca (Gaert.) Voss] using gas chromatography-olfactometry,
J. Agric. Food Chem., 2005, 53, 5, 1637-1641, https://doi.org/10.1021/jf048950h
. [all data]
Bardakci, Demirci, et al., 2012
Bardakci, H.; Demirci, B.; Yesilada, E.; Kirmizibekmez, H.; Naser, K.H.C.,
Chemical composition of the essential oil of the subterranean parts of Valeriana alliariifolia,
Rec. Nat. Prod., 2012, 6, 1, 89-92. [all data]
Viljoen, Subramoney, et al., 2005
Viljoen, A.M.; Subramoney, S.; van Vuuren, S.F.; Baser, K.H.C.; Demirci, B.,
The composition, geographical variation and antimicrobial activity of Lippia javanica (Verbenaceae) leaf essential oils,
J. Ethnopharmacol., 2005, 96, 1-2, 271-277, https://doi.org/10.1016/j.jep.2004.09.017
. [all data]
Notes
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- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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