Butanoic acid, 2-methyl-
- Formula: C5H10O2
- Molecular weight: 102.1317
- IUPAC Standard InChIKey: WLAMNBDJUVNPJU-UHFFFAOYSA-N
- CAS Registry Number: 116-53-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
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- Stereoisomers:
- Other names: Butyric acid, 2-methyl-; α-Methylbutyric acid; Active valeric acid; Ethylmethylacetic acid; Methylethylacetic acid; 2-Methylbutanoic acid; 2-Methylbutyric acid; 2-Methybutyric acid; (.+/-.)-2-Methylbutanoic acid; DL-2-Methylbutyric acid; NSC 7304; 600-07-7
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Van Den Dool and Kratz RI, non-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 | SPB-5 | HP-5 | DB-5 | SE-54 | DB-5 |
Column length (m) | 60. | 30. | 30. | 50. | 30. |
Carrier gas | He | He | He | ||
Substrate | |||||
Column diameter (mm) | 0.32 | 0.25 | 0.32 | 0.32 | 0.32 |
Phase thickness (μm) | 1. | 0.25 | 0.24 | 0.25 | |
Tstart (C) | 40. | 50. | 40. | 40. | 40. |
Tend (C) | 230. | 250. | 240. | 240. | 240. |
Heat rate (K/min) | 3. | 4. | 6. | 8. | 6. |
Initial hold (min) | 2. | 4. | 2. | 2. | 2. |
Final hold (min) | 10. | 10. | 10. | 5. | 10. |
I | 850. | 846. | 867. | 875. | 873. |
Reference | Engel and Ratel, 2007 | Quijano, Salamanca, et al., 2007 | Scheidig, Czerny, et al., 2007 | Schlutt B., Moran N., et al., 2007 | Steinhaus and Schieberle, 2007 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | HP-5MS | CP-Sil 8CB-MS | DB-5MS | HP-5MS | DB-5 |
Column length (m) | 30. | 60. | 30. | 60. | 30. |
Carrier gas | He | He | He | ||
Substrate | |||||
Column diameter (mm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.32 |
Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
Tstart (C) | 60. | 40. | 35. | 40. | 35. |
Tend (C) | 250. | 280. | 200. | 310. | 200. |
Heat rate (K/min) | 4. | 4. | 10. | 3. | 10. |
Initial hold (min) | 2. | 2. | 5. | 1. | 5. |
Final hold (min) | 20. | 5. | 30. | 20. | 30. |
I | 846. | 868. | 876. | 846. | 872. |
Reference | Pino, Mesa, et al., 2005 | Hierro, de la Hoz, et al., 2004 | Karagül-Yüceer, Vlahovich, et al., 2003 | Lalel, Singh, et al., 2003 | Karagül-Yüceer, Cadwallader, et al., 2002 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | CP-Sil 8CB-MS | HP-5 | SPB-5 | SPB-1 | RSL-150 |
Column length (m) | 60. | 30. | 60. | 30. | 30. |
Carrier gas | He | He | He | He | |
Substrate | |||||
Column diameter (mm) | 0.25 | 0.25 | 0.32 | 0.25 | 0.53 |
Phase thickness (μm) | 0.25 | 0.25 | 1. | 0.25 | 1.2 |
Tstart (C) | 40. | 35. | 40. | 50. | 30. |
Tend (C) | 280. | 280. | 200. | 250. | 220. |
Heat rate (K/min) | 4. | 5.3 | 3. | 5. | 3. |
Initial hold (min) | 2. | 5. | 5. | ||
Final hold (min) | 5. | 2. | |||
I | 838. | 856.2 | 848. | 838. | 866. |
Reference | Bruna, Hierro, et al., 2001 | Siegmund, Derler, et al., 2001 | Verdier-Metz., Coulon, et al., 1998 | Lee, DeMilo, et al., 1995 | Sagrero-Nieves, de Pooter, et al., 1989 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Van Den Dool and Kratz RI, non-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.
Engel and Ratel, 2007
Engel, E.; Ratel, J.,
Correction of the data generated by mass spectrometry analyses of biological tissues: Application to food authentication,
J. Chromatogr. A, 2007, 1154, 1-2, 331-341, https://doi.org/10.1016/j.chroma.2007.02.012
. [all data]
Quijano, Salamanca, et al., 2007
Quijano, C.E.; Salamanca, G.; Pino, J.A.,
Aroma volatile constituents of Colombian varieties of mango (Mangifera indica L.),
Flavour Fragr. J., 2007, 22, 5, 401-406, https://doi.org/10.1002/ffj.1812
. [all data]
Scheidig, Czerny, et al., 2007
Scheidig, C.; Czerny, M.; Schieberle, P.,
Changes in Key Odorants of Raw Coffee Beans during Storage under Defined Conditions,
J. Agric. Food Chem., 2007, 55, 14, 5768-5775, https://doi.org/10.1021/jf070488o
. [all data]
Schlutt B., Moran N., et al., 2007
Schlutt B.; Moran N.; Schieberle P.; Hofmann T.,
Sensory-directed identification of creaminess-enhancing volatiles and semivolatiles in full-fat cream,
J. Agric. Food Chem., 2007, 55, 23, 9634-9645, https://doi.org/10.1021/jf0721545
. [all data]
Steinhaus and Schieberle, 2007
Steinhaus, P.; Schieberle, P.,
Characterization of the key aroma compounds in soy sauce using approaches of molecular sensory science,
J. Agric. Food Chem., 2007, 55, 15, 6262-6269, https://doi.org/10.1021/jf0709092
. [all data]
Pino, Mesa, et al., 2005
Pino, J.A.; Mesa, J.; Muñoz, Y.; Martí, M.P.; Marbot, R.,
Volatile components from mango (Mangifera indica L.) cultivars,
J. Agric. Food Chem., 2005, 53, 6, 2213-2223, https://doi.org/10.1021/jf0402633
. [all data]
Hierro, de la Hoz, et al., 2004
Hierro, E.; de la Hoz, L.; Ordóñez, J.A.,
Headspace volatile compounds from salted and occasionally smoked dried meats (cecinas) as affected by animal species,
Food Chem., 2004, 85, 4, 649-657, https://doi.org/10.1016/j.foodchem.2003.07.001
. [all data]
Karagül-Yüceer, Vlahovich, et al., 2003
Karagül-Yüceer, Y.; Vlahovich, K.N.; Drake, M.A.; Cadwallader, K.R.,
Characteristic aroma components of rennet casein,
J. Agric. Food Chem., 2003, 51, 23, 6797-6801, https://doi.org/10.1021/jf0345806
. [all data]
Lalel, Singh, et al., 2003
Lalel, H.J.D.; Singh, Z.; Chye Tan, S.,
Glycosidically-bound aroma volatile compounds in the skin and pulp of 'Kensington Pride' mango fruit at different stages of maturity,
Postharvest Biol. Technol., 2003, 29, 2, 205-218, https://doi.org/10.1016/S0925-5214(02)00250-8
. [all data]
Karagül-Yüceer, Cadwallader, et al., 2002
Karagül-Yüceer, Y.; Cadwallader, K.R.; Drake, M.A.,
Volatile flavor components of stored nonfat dry milk,
J. Agric. Food Chem., 2002, 50, 2, 305-312, https://doi.org/10.1021/jf010648a
. [all data]
Bruna, Hierro, et al., 2001
Bruna, J.M.; Hierro, E.M.; de la Hoz, L.; Mottram, D.S.; Fernández, M.; Ordóñez, J.A.,
The contribution of Penicillium aurantiogriseum to the volatile composition and sensory quality of dry fermented sausages,
Meat Sci., 2001, 59, 1, 97-107, https://doi.org/10.1016/S0309-1740(01)00058-4
. [all data]
Siegmund, Derler, et al., 2001
Siegmund, B.; Derler, K.; Pfannhauser, W.,
Changes in the aroma of a strawberry drink during storage,
J. Agric. Food Chem., 2001, 49, 7, 3244-3252, https://doi.org/10.1021/jf010116u
. [all data]
Verdier-Metz., Coulon, et al., 1998
Verdier-Metz., I.; Coulon, J.-B.; PPradel, P.; Viallon, C.; Berdague, J.-L.,
Effect of forage conservation (hay or silage) and cow breed on the coagulation properties of milks and on the characteristics of ripened cheeses,
J. Dairy Res., 1998, 65, 1, 9-21, https://doi.org/10.1017/S0022029997002616
. [all data]
Lee, DeMilo, et al., 1995
Lee, C.-J.; DeMilo, A.B.; Moreno, D.S.; Martinez, A.J.,
Analysis of the volatile components of a bacterial fermentation that is attractive to the Mexican fruit fly, Anastrepha ludens,
J. Agric. Food Chem., 1995, 43, 5, 1348-1351, https://doi.org/10.1021/jf00053a041
. [all data]
Sagrero-Nieves, de Pooter, et al., 1989
Sagrero-Nieves, L.; de Pooter, H.L.; Van Wassenhove, F.A.,
Major Volatile Constituents from the Fruit of Mammee Apple (Mammea americana L.),
J. Food Comp. Anal., 1989, 2, 4, 382-385, https://doi.org/10.1016/0889-1575(89)90010-0
. [all data]
Notes
Go To: Top, Van Den Dool and Kratz RI, non-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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