Thiophene, 2,4-dimethyl-

• Formula: C₆H₈S
• Molecular weight: 112.193
• IUPAC Standard InChI: InChI=1S/C6H8S/c1-5-3-6(2)7-4-5/h3-4H,1-2H3 Copy

  
• IUPAC Standard InChIKey: CPULIKNSOUFMPL-UHFFFAOYSA-N Copy
• CAS Registry Number: 638-00-6
• 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: 2,4-Dimethylthiophene
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• Information on this page:
  • Phase change data
  • Mass spectrum (electron ionization)
  • Gas Chromatography
  • References
  • Notes
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Phase change data

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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

Enthalpy of vaporization

Mass spectrum (electron ionization)

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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

Gas Chromatography

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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

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Van Den Dool and Kratz RI, polar column, temperature ramp

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Normal alkane RI, non-polar column, temperature ramp

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Normal alkane RI, non-polar column, custom temperature program

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Normal alkane RI, polar column, temperature ramp

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Normal alkane RI, polar column, custom temperature program

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References

Go To: Top, Phase change data, 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.

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Dykyj, 1972
Dykyj, J., Petrochemia, 1972, 12, 1, 13. [all data]

Dykyj, Svoboda, et al., 1999
Dykyj, J.; Svoboda, J.; Wilhoit, R.C.; Frenkel, M.L.; Hall, K.R., Vapor Pressure of Chemicals: Part A. Vapor Pressure and Antoine Constants for Hydrocarbons and Sulfur, Selenium, Tellurium and Hydrogen Containing Organic Compounds, Springer, Berlin, 1999, 373. [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]

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]

Farkas, Hradský, et al., 1992
Farkas, P.; Hradský, P.; Kovác, M., Novel flavour components identified in the steamn distillate of onion (Allium cepa L.), Z. Lebensm. Unters. Forsch., 1992, 195, 5, 459-462, https://doi.org/10.1007/BF01191718 . [all data]

Kuo and Ho, 1992
Kuo, M.-C.; Ho, C.-T., Volatile constituents of the distilled oils of Welsh onions (Allium fistulosum L. variety Maichuon) and scallions (Allium fistulosum L. variety Caespitosum), J. Agric. Food Chem., 1992, 40, 1, 111-117, https://doi.org/10.1021/jf00013a021 . [all data]

Kuo and Ho, 1992, 2
Kuo, M.-C.; Ho, C.-T., Volatile constituents of the solvent extracts of Welsh onions (Allium fistulosum L. variety Maichuon) and scallions (A. fistulosum L. variety caepitosum), J. Agric. Food Chem., 1992, 40, 10, 1906-1910, https://doi.org/10.1021/jf00022a036 . [all data]

Calvo-Gómez, Morales-López, et al., 2004
Calvo-Gómez, O.; Morales-López, J.; López, M.G., Solid-phase microextraction-gas chromatographic-mass spectrometric analysis of garlic oil obtained by hydrodistillation, J. Chromatogr. A, 2004, 1036, 1, 91-93, https://doi.org/10.1016/j.chroma.2004.02.072 . [all data]

Nielsen, Larsen, et al., 2004
Nielsen, G.S.; Larsen, L.M.; Poll, L., Formation of aroma compounds during long-term frozen storage of unblanched leek (Allium ampeloprasum Var. Bulga) as affected by packaging atmosphere and slice thickness, J. Agric. Food Chem., 2004, 52, 5, 1234-1240, https://doi.org/10.1021/jf0306183 . [all data]

Nielsen and Poll, 2004
Nielsen, G.S.; Poll, L., Determination of odor active aroma compounds in freshly cut leek (Allium ampeloprasum Var. Bulga) and in long-term stored frozen unblanched and blanched leek slices by gas chromatography olfactometry analysis, J. Agric. Food Chem., 2004, 52, 6, 1642-1646, https://doi.org/10.1021/jf030682k . [all data]

Nielsen, Larsen, et al., 2003
Nielsen, G.S.; Larsen, L.M.; Poll, L., Formation of aroma compounds and lipoxygenase (EC 1.13.11.12) activity in unblanced leek (Allium ampeloprasum Var. Bulga) slices during long-term frozen storage, J. Agric. Food Chem., 2003, 51, 7, 1970-1976, https://doi.org/10.1021/jf020921o . [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]

Yang, Wang, et al., 2004
Yang, Y.; Wang, Z.; Zong, B.; Yang, H., Determination of sulfur compounds in fluid catalytic cracking gasoline by gas chromatography with a sulfur chemiluminiscence detector, Chin. J. Chromatogr., 2004, 22, 3, 216-219. [all data]

Yang, Wang, et al., 2003
Yang, Y.-T.; Wang, Z.; Han. J.-H.; Tian, H.-P.; Yang, H.-Y., Determination of sulfur compounds in gasoline fraction of microreactor products by gas chromatography - Atomic emission detector, Petrochemical Technology (Shiyou Huagong), 2003, 32, 11, 995-998. [all data]

Kubec, Drhová, et al., 1999
Kubec, R.; Drhová, V.; Velísek, J., Volatile compounds thermally generated from S-propylcysteine and S-propylcysteine sulfoxide - aroma precursors of Allium vegetables, J. Agric. Food Chem., 1999, 47, 3, 1132-1138, https://doi.org/10.1021/jf980974z . [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]

Damste, van Dalen, et al., 1988
Damste, J.S.S.; van Dalen, A.C.K.; de Leeuw, J.W.; Schenck, P.A., Identification of homologous series of alkylated thiophenes, thiolanes, thianes and benzothiophenes present in pyrolisates of sulfur-rich kerogenes, J. Chromatogr., 1988, 435, 435-452, https://doi.org/10.1016/S0021-9673(01)82208-1 . [all data]

Damste, Kock-van Dalen, et al., 1988
Damste, J.S.S.; Kock-van Dalen, A.C.; de Leeuw, J.W.; Schenk, P.A., Identification of homologous series of alkylated thiophenes, thiolanes, thianes and benzothiophenes present in pyrolysates of sulphur-rich kerogens, J. Chromatogr., 1988, 435, 435-452, https://doi.org/10.1016/S0021-9673(01)82208-1 . [all data]

Rotsatschakul, Visesanguan, et al., 2009
Rotsatschakul, P.; Visesanguan, W.; Smitinont, T.; Chaiseri, S., Changes in volatile compounds during fermentation of nham (Thai fermented sausage), Int. Food Res. J., 2009, 16, 391-414. [all data]

Pyun and Shin, 2006
Pyun, M.-S.; Shin, S., Antifungal effects of the volatile oils from Allium plants against Trichophyton species and synergism of the oils with ketoconazole, Phytomedicine, 2006, 13, 6, 394-400, https://doi.org/10.1016/j.phymed.2005.03.011 . [all data]

Shibamoto and Russell, 1977
Shibamoto, T.; Russell, G.F., A study of the volatiles isolated from a D-glucose-hydrogen sulfide-ammonia model system, J. Agric. Food Chem., 1977, 25, 1, 109-112, https://doi.org/10.1021/jf60209a054 . [all data]

Shibamoto and Russell, 1976
Shibamoto, T.; Russell, G.F., Study of meat volatiles associated with aroma generated in a D-glucose-hydrogen sulfide-ammonia model system, J. Agric. Food Chem., 1976, 24, 4, 843-846, https://doi.org/10.1021/jf60206a047 . [all data]

Gyawalia, Seo, et al., 2006
Gyawalia, R.; Seo, H.-Y.; Lee, H.-J.; Song, H.-P.; Kim, D.-H.; Byun, M.-W.; Kim, K.-S., Effect of γ-irradiation on volatile compounds of dried Welsh onion (Allium fistulosum L.), Radiat. Phys. Chem., 2006, 75, 2, 322-328, https://doi.org/10.1016/j.radphyschem.2005.07.001 . [all data]

Jung, Kim, et al., 2001
Jung, E.-J.; Kim, J.-P.; Cho, J.-E.; Lee, J.-W.; Lee, Y.-B.; Kim, W.-J., effect of extraction solvent on volatile compounds of garlic oleoresin, J. Korean Soc. Food Sci. Nutr., 2001, 30, 6, 1033-1037. [all data]

Notes

Go To: Top, Phase change data, Mass spectrum (electron ionization), Gas Chromatography, References

• Symbols used in this document:
  

  ΔvapH

  Enthalpy of vaporization

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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