2-Acetyl-5-methylthiophene
- Formula: C7H8OS
- Molecular weight: 140.203
- IUPAC Standard InChIKey: YOSDTJYMDAEEAZ-UHFFFAOYSA-N
- CAS Registry Number: 13679-74-8
- 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: Methyl 5-methyl-2-thienyl ketone; Ethanone, 1-(5-methyl-2-thienyl)-; Ketone, methyl 5-methyl-2-thienyl; 2-Methyl-5-acetylthiophene; 1-(5-Methyl-2-thienyl)ethanone; 5-Methyl-2-acetylthiophene; Thiophene, 2-acetyl-5-methyl; 1-(5-methyl-2-thienyl)ethan-1-one
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IR Spectrum
Go To: Top, Mass spectrum (electron ionization), 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Phase Spectrum
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Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
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Owner | SRD/NIST Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
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Origin | EPA-IR VAPOR PHASE LIBRARY |
State | gas |
Mass spectrum (electron ionization)
Go To: Top, IR Spectrum, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
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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Origin | NIST Mass Spectrometry Data Center, 1994 |
NIST MS number | 133919 |
Gas Chromatography
Go To: Top, IR Spectrum, 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, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | BP-5 | 1157. | Whitfield and Mottram, 2001 | 4. K/min; Column length: 50. m; Column diameter: 0.32 mm; Tstart: 60. C; Tend: 250. C |
Capillary | BP-5 | 1157. | Whitfield and Mottram, 1999 | He, 60. C @ 5. min, 4. K/min; Column length: 50. m; Column diameter: 0.32 mm; Tend: 250. C |
Capillary | DB-5 | 1145. | Madruga and Mottram, 1998 | 30. m/0.32 mm/1. μm, 60. C @ 5. min, 4. K/min, 250. C @ 20. min |
Capillary | OV-101 | 1123. | Misharina, Golovnya, et al., 1992 | 50. m/0.31 mm/0.5 μm, He, 4. K/min; Tstart: 50. C; Tend: 250. C |
Capillary | DB-1 | 1130. | 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, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | CP-Wax 52CB | 1874. | 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 | HP-5 | 1197. | Kubec, Velísek, et al., 1997 | 30. m/0.25 mm/0.25 μm, N2, 40. C @ 3. min, 4. K/min, 240. C @ 10. min |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | SE-30 | 1185. | Vinogradov, 2004 | Program: not specified |
Capillary | Methyl Silicone | 1170. | Misharina, 1995 | Program: not specified |
Capillary | Methyl Silicone | 1174. | Misharina, 1995 | Program: not specified |
Normal alkane RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-Innowax | 1914. | Kubec, Velísek, et al., 1997 | 30. m/0.25 mm/0.5 μm, N2, 40. C @ 3. min, 4. K/min; Tend: 190. C |
Normal alkane RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Carbowax 20M | 1836. | Vinogradov, 2004 | Program: not specified |
References
Go To: Top, IR Spectrum, 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.
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]
Whitfield and Mottram, 1999
Whitfield, F.B.; Mottram, D.S.,
Investigation of the reaction between 4-hydroxy-5-methyl-3(2H)-furanone and cysteine or hydrogen sulfide at pH 4.5,
J. Agric. Food Chem., 1999, 47, 4, 1626-1634, https://doi.org/10.1021/jf980980v
. [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]
Misharina, Golovnya, et al., 1992
Misharina, T.A.; Golovnya, R.V.; Artamonova, M.P.; Zhuravskaya, N.K.,
Identification of volatile components of a model system with meat aroma,
Zh. Anal. Khim., 1992, 47, 850-857. [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]
Kubec, Velísek, et al., 1997
Kubec, R.; Velísek, J.; Dolezal, M.; Kubelka, V.,
Sulfur-containing volatiles arising by thermal degradation of alliin and deoxyalliin,
J. Agric. Food Chem., 1997, 45, 9, 3580-3585, https://doi.org/10.1021/jf970071q
. [all data]
Vinogradov, 2004
Vinogradov, B.A.,
Production, composition, properties and application of essential oils, 2004, retrieved from http://viness.narod.ru. [all data]
Misharina, 1995
Misharina, T.A.,
Sorption regularities of sulfur- and oxygen-containing compounds in chromatography and their application in identification of volatile organic compounds, Diss. degree of Dr. Sci. (Chemistry), 1995, 52. [all data]
Notes
Go To: Top, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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