Propanoic acid, 2-methyl-, ethyl ester
- Formula: C6H12O2
- Molecular weight: 116.1583
- IUPAC Standard InChI: InChI=1S/C6H12O2/c1-4-8-6(7)5(2)3/h5H,4H2,1-3H3
- IUPAC Standard InChIKey: WDAXFOBOLVPGLV-UHFFFAOYSA-N
- CAS Registry Number: 97-62-1
- 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: Isobutyric acid, ethyl ester; Ethyl isobutyrate; Ethyl 2-methylpropanoate; Ethyl 2-methylpropionate; Ethyl isobutanoate; Propionic acid, 2-methyl-, ethyl ester; UN 2385; Ethyl ester of 2-methyl-propanoic acid; Ethyl methylpropanoate; 2-Methylpropanoic acid ethyl ester; Ethyl 2,2-dimethylacetate; NSC 97194; Ethyl-2-methylproanoate
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Van Den Dool and Kratz RI, non-polar column, custom temperature program
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 | VF-5MS | BPX-5 | SE-54 | SE-54 | DB-5 |
| Column length (m) | 30. | 30. | 30. | 30. | 30. |
| Carrier gas | He | He | He | He | He |
| Substrate | |||||
| Column diameter (mm) | 0.25 | 0.25 | 0.32 | 0.32 | 0.32 |
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | 1. |
| Program | Multi-step temperature program; T(initial)=60C; T(final)=270C | 35C => 4C/min => 200C => 30C/min => 300C (3min) | 35C(2min) => 40C/min => 50C(2min) => 6C/min => 180C => 20C/min => 230C(10min) | 35C(2min) => 40C/min => 50C(2min) => 6C/min => 180C => 20C/min => 230C(10min) | 40C(2min) => 5C/min => 100C => 4C/min => 230C (10min) |
| I | 751. | 758. | 760. | 763. | 754. |
| Reference | Tretyakov, 2011 | Dharmawan, Kasapis, et al., 2007 | Fritsch and Schieberle, 2005 | Fritsch and Schieberle, 2005 | Wang, Finn, et al., 2005 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | DB-5 | DB-5 | DB-5 | HP-5 | CP Sil 8 CB |
| Column length (m) | 30. | 30. | 30. | 50. | 25. |
| Carrier gas | He | He | He | He | |
| Substrate | |||||
| Column diameter (mm) | 0.32 | 0.32 | 0.25 | 0.32 | 0.32 |
| Phase thickness (μm) | 1. | 1. | 0.25 | 1.05 | 0.25 |
| Program | 40C(2min) => 5C/min => 100C => 4C/min => 230C (10min) | 40C (2min) => 5C/min => 100C => 4C/min => 230C (10min) | 40C(2min) => 5C/min => 100C => 4C/min => 230C(10min) | 35C(5min) => 10C/min => 150C => 20C/min => 250C(10 min) | 35C(2min) => 5C/min => 170C => 20C/min => 240C (10min) |
| I | 779. | 750. | 753. | 761. | 747. |
| Reference | Wang, Finn, et al., 2005 | Klesk, Qian, et al., 2004 | Klesk and Qian, 2003 | Carrapiso, Ventanas, et al., 2002 | Fuhrmann and Grosch, 2002 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | RTX-5 | DB-5 | DB-5 | DB-5 | CP Sil 8 CB |
| Column length (m) | 30. | 30. | 30. | 30. | |
| Carrier gas | He | He | |||
| Substrate | |||||
| Column diameter (mm) | 0.25 | 0.32 | 0.32 | 0.32 | |
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | ||
| Program | not specified | 50C (1min) => 5C/min => 100C => 10C/min => 250C (9min) | 40C(2min) => 40C/min => 50C (1min) => 6C/min => 180C => 10C/min => 240C (5min) | 40C(2min) => 40C/min => 50C (1min) => 6C/min => 180C => 10C/min => 240C (5min) | 35C (2min) => 40C/min => 50C (2min) => 6C/min => 180C => 10C/min => 240C |
| I | 766. | 751. | 759. | 757. | 754. |
| Reference | Fuhrmann and Grosch, 2002 | Beaulieu and Grimm, 2001 | Munk, Munch, et al., 2000 | Munk, Munch, et al., 2000 | Steinhaus and Schieberle, 2000 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | SE-54 | BPX-5 | SE-54 | SE-54 | SE-54 |
| Column length (m) | 30. | 50. | 25. | 25. | 30. |
| Carrier gas | He | He | He | He | He |
| Substrate | |||||
| Column diameter (mm) | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 |
| Phase thickness (μm) | 0.25 | 0.50 | 0.5 | 0.5 | 0.25 |
| Program | 35C (2min) => 40C/min => 50C (2min) => 6C/min => 180C => 10C/min => 230C (10min) | 0 0C (8 min) -> (1 min) -> 50 0C (2 min) 2.5 0C/min -> 100 0C 6 0C/min -> 250 0C | 35C (2min) => 4C/min => 150C => 10C/min => 240C | 35C (2min) => 4C/min => 150C => 10C/min => 240C | 35C(2min) => 40C/min => 50C(2min) => 6C/min => 180C => 10C/min => 230C(10min) |
| I | 751. | 755. | 763. | 755. | 751. |
| Reference | Buettner and Schieberle, 1999 | Bauchot, Mottram, et al., 1998 | Fickert and Schieberle, 1998 | Fickert and Schieberle, 1998 | Hinterholzer and Schieberie, 1998 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary |
|---|---|
| Active phase | SE-54 |
| Column length (m) | 30. |
| Carrier gas | He |
| Substrate | |
| Column diameter (mm) | 0.32 |
| Phase thickness (μm) | 0.25 |
| Program | 40C (2min) => 40C/min => 50C (2min) => 240C (10min) |
| I | 758. |
| Reference | Münch, Hofmann, et al., 1997 |
| Comment | MSDC-RI |
References
Go To: Top, Van Den Dool and Kratz RI, non-polar column, custom temperature program, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Tretyakov, 2011
Tretyakov, K.V.,
Retention Data. NIST Mass Spectrometry Data Center., NIST Mass Spectrometry Data Center, 2011. [all data]
Dharmawan, Kasapis, et al., 2007
Dharmawan, J.; Kasapis, S.; Curran, P.; Johnson, J.R.,
Characterization of volatile compounds in selected citrus fruits from Asia. Part I: freshly-squeezed juice,
Flavour Fragr. J., 2007, 22, 3, 228-232, https://doi.org/10.1002/ffj.1790
. [all data]
Fritsch and Schieberle, 2005
Fritsch, H.T.; Schieberle, P.,
Identification based on quantitative measurements and aroma recombination of the character impact odorants in a Bavarian Pilsner-type beer,
J. Agric. Food Chem., 2005, 53, 19, 7544-7551, https://doi.org/10.1021/jf051167k
. [all data]
Wang, Finn, et al., 2005
Wang, Y.; Finn, C.; Qian, M.C.,
Impact of Growing Environment on Chickasaw Blackberry ( Rubus L.) Aroma Evaluated by Gas Chromatography Olfactometry Dilution Analysis,
J. Agric. Food Chem., 2005, 53, 9, 3563-3571, https://doi.org/10.1021/jf048102m
. [all data]
Klesk, Qian, et al., 2004
Klesk, K.; Qian, M.; Martin, R.R.,
Aroma extract dilution analysis of cv. meeker (Rubus idaeus L.) red raspberries from Oregon and Washington,
J. Agric. Food Chem., 2004, 52, 16, 5155-5161, https://doi.org/10.1021/jf0498721
. [all data]
Klesk and Qian, 2003
Klesk, K.; Qian, M.,
Aroma extract dilution analysis of Cv. Marion (Rubus spp. hyb) and Cv. Evergreen (R. Iaciniatus L.) blackberries,
J. Agric. Food Chem., 2003, 51, 11, 3436-3441, https://doi.org/10.1021/jf0262209
. [all data]
Carrapiso, Ventanas, et al., 2002
Carrapiso, A.I.; Ventanas, J.; García, C.,
Characterization of the most odor-active compounds of Iberian ham headspace,
J. Agric. Food Chem., 2002, 50, 7, 1996-2000, https://doi.org/10.1021/jf011094e
. [all data]
Fuhrmann and Grosch, 2002
Fuhrmann, E.; Grosch, W.,
Character impact odorants of the apple cultivars Elstar and Cox Orange,
Nahrung/Food, 2002, 46, 3, 187-193, https://doi.org/10.1002/1521-3803(20020501)46:3<187::AID-FOOD187>3.0.CO;2-5
. [all data]
Beaulieu and Grimm, 2001
Beaulieu, J.C.; Grimm, C.C.,
Identification of volatile compounds in cantaloupe at various developmental stages using solid phase microextraction,
J. Agric. Food Chem., 2001, 49, 3, 1345-1352, https://doi.org/10.1021/jf0005768
. [all data]
Munk, Munch, et al., 2000
Munk, S.; Munch, P.; Stahnke, L.; Adler-Nissen., J.; Schieberle, P.,
Primary odorants of laundry soiled with sweat/sebum: influence of lipase on the odor profile,
Journal of Surfactants and Detergents, 2000, 3, 4, 505-515, https://doi.org/10.1007/s11743-000-0150-z
. [all data]
Steinhaus and Schieberle, 2000
Steinhaus, M.; Schieberle, P.,
Comparison of the most odor-active compounds in fresh and dried hop cones (Humulus lupulus L. variety Spalter Select) based on GC-olfactometry and odor dilution techniques,
J. Agric. Food Chem., 2000, 48, 5, 1776-1783, https://doi.org/10.1021/jf990514l
. [all data]
Buettner and Schieberle, 1999
Buettner, A.; Schieberle, P.,
Characterization of the most odor-active volatiles in fresh, hand squeezed juice of grapefruit (Citrus paradise Macfayden),
J. Agric. Food Chem., 1999, 47, 12, 5189-5193, https://doi.org/10.1021/jf990071l
. [all data]
Bauchot, Mottram, et al., 1998
Bauchot, A.D.; Mottram, D.S.; Dodson, A.T.; John, P.,
Effect of aminocyclopropane-1-carboxylic acid oxidase antisense gene on the formation of volatile esters in cantaloupe charentais melon (Cv. Védrandais),
J. Agric. Food Chem., 1998, 46, 11, 4787-4792, https://doi.org/10.1021/jf980692z
. [all data]
Fickert and Schieberle, 1998
Fickert, B.; Schieberle, P.,
Identification of the key odorants in barley malt (caramalt) using GC/MS techniques and odour dilution analyses,
Nahrung, 1998, 42, 6, 371-375, https://doi.org/10.1002/(SICI)1521-3803(199812)42:06<371::AID-FOOD371>3.0.CO;2-V
. [all data]
Hinterholzer and Schieberie, 1998
Hinterholzer, A.; Schieberie, P.,
Identification of the most odour-active volatiles in fresh, hand-extracted juice of valencia late oranges by odour dilution techniques,
Flavour Fragr. J., 1998, 13, 1, 49-55, https://doi.org/10.1002/(SICI)1099-1026(199801/02)13:1<49::AID-FFJ691>3.0.CO;2-S
. [all data]
Münch, Hofmann, et al., 1997
Münch, P.; Hofmann, T.; Schieberle, P.,
Comparison of key odorants generated by thermal treatment of commercial and self-prepared yeast extracts: influence of the amino acid composition on odorant formation,
J. Agric. Food Chem., 1997, 45, 4, 1338-1344, https://doi.org/10.1021/jf960658p
. [all data]
Notes
Go To: Top, Van Den Dool and Kratz RI, non-polar column, custom temperature program, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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