Pentanoic acid, 4-methyl-
- Formula: C6H12O2
- Molecular weight: 116.1583
- IUPAC Standard InChI: InChI=1S/C6H12O2/c1-5(2)3-4-6(7)8/h5H,3-4H2,1-2H3,(H,7,8)
- IUPAC Standard InChIKey: FGKJLKRYENPLQH-UHFFFAOYSA-N
- CAS Registry Number: 646-07-1
- 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: Valeric acid, 4-methyl-; Isobutylacetic acid; Isocaproic acid; Isohexanoic acid; 4-Methylpentanoic acid; 4-Methylvaleric acid; 4,4-Dimethylbutanoic acid; 4-Methyl-n-valeric acid; Isohexoic acid; NSC 4126
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Normal alkane RI, 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 | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | CP-Wax 52CB | DB-Wax | DB-Wax | DB-Wax | TC-Wax |
| Column length (m) | 30. | 30. | 30. | 60. | 60. |
| Carrier gas | He | He | N2 | H2 | He |
| Substrate | |||||
| Column diameter (mm) | 0.32 | 0.32 | 0.32 | 0.25 | |
| Phase thickness (μm) | 0.32 | 0.25 | 0.25 | 0.25 | 0.25 |
| Tstart (C) | 50. | 40. | 40. | 40. | 40. |
| Tend (C) | 220. | 230. | 230. | 230. | 230. |
| Heat rate (K/min) | 6. | 4. | 6. | 4. | 3. |
| Initial hold (min) | 2. | 2. | 2. | 5. | 10. |
| Final hold (min) | 20. | 15. | 15. | 25. | 10. |
| I | 1774. | 1820. | 1824. | 1813. | 1803. |
| Reference | Audino, Alzogaray, et al., 2007 | Fan and Qian, 2006 | Fan and Qian, 2006, 2 | Dregus and Engel, 2003 | Suhardi, Suzuki, et al., 2002 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Normal alkane RI, 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.
Audino, Alzogaray, et al., 2007
Audino, P.G.; Alzogaray, R.A.; Vassena, C.; Masuh, H.; Fontán, A.; Gatti, P.; Martínez, A.; Camps, F.; Cork, A.; Zerba, E.,
Volatile compounds secreted by Brindley's glands of adult Triatoma infestans: identification and biological activity of previously unidentified compounds,
Journal of Vector Ecology, 2007, 32, 1, 75-82, https://doi.org/10.3376/1081-1710(2007)32[75:VCSBBO]2.0.CO;2
. [all data]
Fan and Qian, 2006
Fan, W.; Qian, M.C.,
Characterization of Aroma Compounds of Chinese Wuliangye and Jiannanchun Liquors by Aroma Extract Dilution Analysis,
J. Agric. Food Chem., 2006, 54, 7, 2695-2704, https://doi.org/10.1021/jf052635t
. [all data]
Fan and Qian, 2006, 2
Fan, W.; Qian, M.C.,
Identification of aroma compounds in Chinese 'Yanghe Daqu' liquor by normal phase chromatography fractionation followed by gas chromatography/olfactometry,
Flavour Fragr. J., 2006, 21, 2, 333-342, https://doi.org/10.1002/ffj.1621
. [all data]
Dregus and Engel, 2003
Dregus, M.; Engel, K.-H.,
Volatile constituents of uncooked Rhubarb (Rheum rhabarbarum L.) stalks,
J. Agric. Food Chem., 2003, 51, 22, 6530-6536, https://doi.org/10.1021/jf030399l
. [all data]
Suhardi, Suzuki, et al., 2002
Suhardi, S.; Suzuki, M.; Yoshida, K.; Muto, T.; Fujita, A.; Watanbe, N.,
Changes in the volatile compounds and in the chemical and physical properties of snake fruit (Salacca edulis Reinw) Cv. Pondoh during maturation,
J. Agric. Food Chem., 2002, 50, 26, 7627-7633, https://doi.org/10.1021/jf020620e
. [all data]
Notes
Go To: Top, Normal alkane RI, 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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