2-Acetyl-3-methylthiophene
- Formula: C7H8OS
- Molecular weight: 140.203
- IUPAC Standard InChI: InChI=1S/C7H8OS/c1-5-3-4-9-7(5)6(2)8/h3-4H,1-2H3
- IUPAC Standard InChIKey: YBJDKNXEWQSGEL-UHFFFAOYSA-N
- CAS Registry Number: 13679-72-6
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Ethanone, 1-(3-methyl-2-thienyl)-; 1-(3-Methyl-2-thienyl)ethanone; 3-Methyl-2-acetylthiophene; Thiophene, 2-acetyl-3-methyl; 1-(3-methyl-2-thienyl)ethan-1-one
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Phase change data
Go To: Top, Gas Chromatography, 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: William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔvapH° | 13.6 ± 0.57 | kcal/mol | C | Ribeiro da Silva and Santos, 2008 |
Gas Chromatography
Go To: Top, Phase change data, 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, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-5 | 1161. | Madruga and Mottram, 1998 | 30. m/0.32 mm/1. μm, 60. C @ 5. min, 4. K/min, 250. C @ 20. min |
| Capillary | DB-1 | 1137. | Zhang and Ho, 1991 | 60. m/0.25 mm/0.25 μm, He, 2. K/min, 220. C @ 10. min; Tstart: 40. C |
Van Den Dool and Kratz RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | CP-WAX 57CB | 1760. | Whitfield, Mottram, et al., 1988 | He, 60. C @ 5. min, 4. K/min, 200. C @ 10. min; Column length: 50. m; Column diameter: 0.32 mm |
| Capillary | CP-WAX 57CB | 1761. | Whitfield, Mottram, et al., 1988 | He, 60. C @ 5. min, 4. K/min, 200. C @ 10. min; Column length: 50. m; Column diameter: 0.32 mm |
Van Den Dool and Kratz RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | CP-Wax 52CB | 1762. | Madruga and Mottram, 1998 | 50. m/0.32 mm/0.21 μm; Program: 0C(5min) => fast => 60C(5min) => 4C/min => 220C(20min) |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-1 | 1186. | Yu, Wu, et al., 1994 | 60. m/0.25 mm/1.0 μm, He, 40. C @ 5. min, 2. K/min, 260. C @ 60. min |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Polydimethyl siloxane | 1194. | Xu, He, et al., 2010 | Program: 40 0C 20 0C/min -> 60 0C (5 min) 4 0C/min -> 250 0C |
References
Go To: Top, Phase change data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ribeiro da Silva and Santos, 2008
Ribeiro da Silva, Manuel A.V.; Santos, Ana Filipa L.O.M.,
Experimental thermochemical study of the three methyl substituted 2-acetylthiophene isomers,
The Journal of Chemical Thermodynamics, 2008, 40, 8, 1309-1313, https://doi.org/10.1016/j.jct.2008.03.008
. [all data]
Madruga and Mottram, 1998
Madruga, M.S.; Mottram, D.S.,
The effect of pH on the formation of volatile compounds produced by heating a model system containing 5'-imp and cysteine,
J. Braz. Chem. Soc., 1998, 9, 3, 261-271, https://doi.org/10.1590/S0103-50531998000300010
. [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]
Whitfield, Mottram, et al., 1988
Whitfield, F.B.; Mottram, D.S.; Brock, S.; Puckey, D.J.; Salter, L.J.,
Effect of Phospholipid on the Formation of Volatile Heterocyclic Compounds in Heated Aqueous Solutions of Amino Acids and Ribose,
J. Sci. Food Agric., 1988, 42, 3, 261-272, https://doi.org/10.1002/jsfa.2740420309
. [all data]
Yu, Wu, et al., 1994
Yu, T.-H.; Wu, C.-M.; Ho, C.-T.,
Meat-like flavor generated from thermal interactions of glucose and alliin or deoxyalliin,
J. Agric. Food Chem., 1994, 42, 4, 1005-1009, https://doi.org/10.1021/jf00040a032
. [all data]
Xu, He, et al., 2010
Xu, H.; He, W.; Liu, X.; Gao, Y.,
Effect of pressure on the Maillard reaction between ribose and cysteine in supercritical carbon dioxide,
Czech J. Food Sci., 2010, 28, 3, 192-201. [all data]
Notes
Go To: Top, Phase change data, Gas Chromatography, References
- Symbols used in this document:
ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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