Pentanoic acid, 4-methyl-
- Formula: C6H12O2
- Molecular weight: 116.1583
- 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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Mass spectrum (electron ionization)
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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
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. |
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NIST MS number | 1910 |
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, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-1 | 937. | Place, Imhof, et al., 2003 | 60. m/0.32 mm/1. μm, He; Program: 35C(5min) => 10C/min => 45C (5min) => 5C/min => 250C (10min) |
Capillary | DB-5 | 949. | 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 |
Van Den Dool and Kratz RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 1800. | Malliaa, Fernandez-Garcia, et al., 2005 | 60. m/0.32 mm/1. μm, He, 45. C @ 1. min, 5. K/min, 250. C @ 12. min |
Van Den Dool and Kratz RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | FFAP | 1817. | Yasuhara, 1987 | 50. m/0.25 mm/0.25 μm, He; Program: 20C (5min) => 2C/min => 70C => 4C/min => 210C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | CP-Sil 5 CB | 921. | Collin, Nizet, et al., 2012 | 50. m/0.32 mm/1.20 μm, Nitrogen; Program: 36 0C 20 0C/min -> 85 0C 1 0C/min -> 145 0C 3 0C/min -> 250 0C (30 min) |
Capillary | SPB-5 | 935. | Begnaud, Pérès, et al., 2003 | 60. m/0.32 mm/1. μm; Program: not specified |
Capillary | DB-5 MS | 955. | Luo and Agnew, 2001 | 30. m/0.25 mm/1.0 μm, Helium; Program: not specified |
Normal alkane RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | CP-Wax 52CB | 1774. | Audino, Alzogaray, et al., 2007 | He, 50. C @ 2. min, 6. K/min, 220. C @ 20. min; Column length: 30. m; Phase thickness: 0.32 μm |
Capillary | DB-Wax | 1820. | Fan and Qian, 2006 | 30. m/0.32 mm/0.25 μm, He, 40. C @ 2. min, 4. K/min, 230. C @ 15. min |
Capillary | DB-Wax | 1824. | Fan and Qian, 2006, 2 | 30. m/0.32 mm/0.25 μm, N2, 40. C @ 2. min, 6. K/min, 230. C @ 15. min |
Capillary | DB-Wax | 1813. | Dregus and Engel, 2003 | 60. m/0.32 mm/0.25 μm, H2, 40. C @ 5. min, 4. K/min, 230. C @ 25. min |
Capillary | TC-Wax | 1803. | Suhardi, Suzuki, et al., 2002 | 60. m/0.25 mm/0.25 μm, He, 40. C @ 10. min, 3. K/min, 230. C @ 10. min |
Normal alkane RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | EC-1000 | 1795. | Delabre and Bendall, 9999 | Program: not specified |
Capillary | DB-Wax | 1809. | Krings, Zelena, et al., 2006 | 30. m/0.32 mm/0.25 μm, He; Program: 45C(5min) => 5C/min => 150C => 10C/min => 240C (10min) |
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.
Place, Imhof, et al., 2003
Place, R.B.; Imhof, M.; Teuber, M.; Olivier Bosset, J.,
Distribution of the volatile (flavour) compounds in Raclette cheese produced with different staphylococci in the smear,
Mitt. Lebensmittelunters. Hyg., 2003, 94, 192-211. [all data]
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]
Malliaa, Fernandez-Garcia, et al., 2005
Malliaa, S.; Fernandez-Garcia, E.; Bosset, J.O.,
Comparison of purge and trap and solid phase microextraction techniques for studying the volatile aroma compounds of three European PDO hard cheeses,
Int. Dairy J., 2005, 15, 6-9, 741-758, https://doi.org/10.1016/j.idairyj.2004.11.007
. [all data]
Yasuhara, 1987
Yasuhara, A.,
Identification of Volatile Compounds in Poultry Manure by Gas Chromatography-Mass Spectrometry,
J. Chromatogr., 1987, 387, 371-378, https://doi.org/10.1016/S0021-9673(01)94539-X
. [all data]
Collin, Nizet, et al., 2012
Collin, S.; Nizet, S.; Gros, J.,
Le houblonnage a cru des bieres speciales belges est bien plus qu'une simple dissolution des composes aromatiques du houblon (in Flamish),
Cerevisia, 2012, 36, 4, 119-124, https://doi.org/10.1016/j.cervis.2011.12.001
. [all data]
Begnaud, Pérès, et al., 2003
Begnaud, F.; Pérès, C.; Berdagué, J.-L.,
Characterization of volatile effluents of livestock buildings by solid-phase microextraction,
Int. J. Environ. Anal. Chem., 2003, 83, 10, 837-849, https://doi.org/10.1080/03067310310001603349
. [all data]
Luo and Agnew, 2001
Luo, J.; Agnew, M.P.,
Gas characteristics before and after biofiltration treating odorous emissions from animal rendering processes,
Environ. Technol., 2001, 22, 9, 1091-1103, https://doi.org/10.1080/09593332208618220
. [all data]
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]
Delabre and Bendall, 9999
Delabre, M.-L.; Bendall, J.F.,
Flavour ingredients from fermented dairy streams,
Expression of Multidisciplinary Flavour Sci., 9999, 375-378. [all data]
Krings, Zelena, et al., 2006
Krings, U.; Zelena, K.; Wu, S.; Berger, R.G.,
Thin-layer high-vacuum distillation to isolate volatile flavour compounds of cocoa powder,
Eur. Food Res. Technol., 2006, 223, 5, 675-681, https://doi.org/10.1007/s00217-006-0252-x
. [all data]
Notes
Go To: Top, Mass spectrum (electron ionization), Gas Chromatography, References
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