Isoxazole, 5-methyl-

• Formula: C₄H₅NO
• Molecular weight: 83.0886
• IUPAC Standard InChI: InChI=1S/C4H5NO/c1-4-2-3-5-6-4/h2-3H,1H3 Copy

  
• IUPAC Standard InChIKey: AGQOIYCTCOEHGR-UHFFFAOYSA-N Copy
• CAS Registry Number: 5765-44-6
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: NSC 52269; 5-Methylisoxazole
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• Information on this page:
  • Condensed phase thermochemistry data
  • Mass spectrum (electron ionization)
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Gas phase ion energetics data
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Condensed phase thermochemistry 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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

Kovats' RI, non-polar column, isothermal

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Normal alkane RI, polar column, custom temperature program

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References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Hamilton, Benton, et al., 1978
Hamilton, W.S.; Benton, S.; French, J.; McCormick, D.; Pustejovsky, S.; Thompson, P., Enthalpies of combustion and formation of 3-methylisoxazole and 5-methylisoxazole, J. Chem. Eng. Data, 1978, 23, 201-203. [all data]

Tappi, 1940
Tappi, G., Sul calore di combustione degli isossiazoli, Gazz. Chim. Ital., 1940, 70, 414-422. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Golovnya, Kuz'menko, et al., 2000
Golovnya, R.V.; Kuz'menko, T.E.; Krikunova, N.I., The influence of alkyl substituents on the chromatographic indicator of self-association of N-containing heterocyclic compounds, Russ. Chem. Bull. (Engl. Transl.), 2000, 49, 2, 321-324, https://doi.org/10.1007/BF02494681 . [all data]

Johanningsmeier and McFeeters, 2011
Johanningsmeier, S.D.; McFeeters, R.F., Detection of volatile spoilage metabolites in fermented cucumbers using nontargeted, comprehensive 2-dimensional gas chromatography-time-of-flight mass spectrometry (GCxGCxTOFMS), J. Food Sci., 2011, 76, 1, c168-c177, https://doi.org/10.1111/j.1750-3841.2010.01918.x . [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Mass spectrum (electron ionization), Gas Chromatography, References

• Symbols used in this document:
  

  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions

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