Oxazole, trimethyl-
- Formula: C6H9NO
- Molecular weight: 111.1418
- IUPAC Standard InChIKey: ZRLDBDZSLLGDOX-UHFFFAOYSA-N
- CAS Registry Number: 20662-84-4
- 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: Trimethyloxazole; 2,4,5-Trimethyloxazole; Oxazole, 2,4,5-trimethyl
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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 | HP-5 | BPX-5 | BPX-5 | BPX-5 | DB-1 |
Column length (m) | 25. | 50. | 50. | 50. | 60. |
Carrier gas | He | He | He | He | He |
Substrate | |||||
Column diameter (mm) | 0.2 | 0.32 | 0.32 | 0.32 | 0.32 |
Phase thickness (μm) | 1. | 0.5 | 0.25 | 0.25 | 1. |
Tstart (C) | 40. | 60. | 60. | 60. | 40. |
Tend (C) | 280. | 250. | 250. | 250. | 220. |
Heat rate (K/min) | 5. | 4. | 4. | 4. | 2. |
Initial hold (min) | 5. | 5. | 5. | 5. | |
Final hold (min) | 5. | 10. | 10. | 10. | |
I | 848. | 852. | 850. | 853. | 829. |
Reference | Solina, Baumgartner, et al., 2005 | Ames, Guy, et al., 2001 | Ames, Guy, et al., 2001, 2 | Ames, Guy, et al., 2001, 2 | Kim, 2001 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|
Active phase | BP-5 | BPX-5 | DB-1 | SPD-1 |
Column length (m) | 50. | 50. | 60. | 60. |
Carrier gas | He | He | ||
Substrate | ||||
Column diameter (mm) | 0.32 | 0.32 | 0.25 | 0.25 |
Phase thickness (μm) | 0.50 | 0.25 | ||
Tstart (C) | 60. | 40. | 40. | 50. |
Tend (C) | 250. | 280. | 220. | 280. |
Heat rate (K/min) | 4. | 4. | 2. | 2. |
Initial hold (min) | 5. | |||
Final hold (min) | 10. | 30. | ||
I | 846. | 857. | 828. | 826. |
Reference | Whitfield and Mottram, 2001 | Aaslyng, Elmore, et al., 1998 | Zhang and Ho, 1991 | Carlin, Jin, et al., 1986 |
Comment | 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.
Solina, Baumgartner, et al., 2005
Solina, M.; Baumgartner, P.; Johnson, R.L.; Whitfield, F.B.,
Volatile aroma components of soy protein isolate and acid-hydrolysed vegetable protein,
Food Chem., 2005, 90, 4, 861-873, https://doi.org/10.1016/j.foodchem.2004.06.005
. [all data]
Ames, Guy, et al., 2001
Ames, J.M.; Guy, R.C.E.; Kipping, G.J.,
Effect of pH and temperature on the formation of volatile compounds in cysteine/reducing sugar/starch mixtures during extrusion cooking,
J. Agric. Food Chem., 2001, 49, 4, 1885-1894, https://doi.org/10.1021/jf0012547
. [all data]
Ames, Guy, et al., 2001, 2
Ames, J.M.; Guy, R.C.E.; Kipping, G.J.,
Effect of pH, temperature, and moisture on the formation of volatile compounds in glycine/glucose model systems,
J. Agric. Food Chem., 2001, 49, 9, 4315-4323, https://doi.org/10.1021/jf010198m
. [all data]
Kim, 2001
Kim, J.S.,
Einfluss der Temperatur beim Rösten von Sesam auf Aroma und antioxidative Eigenschaften des Öls, PhD Thesis, Technischen Universität Berlin zur Erlangung des akademischen Grades, Berlin, 2001, 151. [all data]
Whitfield and Mottram, 2001
Whitfield, F.B.; Mottram, D.S.,
Heterocyclic volatiles formed by heating cysteine or hydrogen sulfide with 4-hydroxy-5-methyl-3(2H)-furanone at pH 6.5,
J. Agric. Food Chem., 2001, 49, 2, 816-822, https://doi.org/10.1021/jf0008644
. [all data]
Aaslyng, Elmore, et al., 1998
Aaslyng, M.D.; Elmore, J.S.; Mottram, D.S.,
Comparison of the aroma characteristics of acid-hydrolyzed and enzyme-hydrolyzed vegetable proteins produced from soy,
J. Agric. Food Chem., 1998, 46, 12, 5225-5231, https://doi.org/10.1021/jf9806816
. [all data]
Zhang and Ho, 1991
Zhang, Y.; Ho, C.-T.,
Comparison of the volatile compounds formed from the thermal reaction of glucose with cysteine and glutathione,
J. Agric. Food Chem., 1991, 39, 4, 760-763, https://doi.org/10.1021/jf00004a029
. [all data]
Carlin, Jin, et al., 1986
Carlin, J.T.; Jin, Q.Z.; Huang, T.-C.; Ho, C.-T.; Chang, S.S.,
Identification of alkyloxazoles, in the volatile compounds from french-fried potatoes,
J. Agric. Food Chem., 1986, 34, 4, 621-623, https://doi.org/10.1021/jf00070a008
. [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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