2(3H)-Furanone, 5-methyl-

• Formula: C₅H₆O₂
• Molecular weight: 98.0999
• IUPAC Standard InChI: InChI=1S/C5H6O2/c1-4-2-3-5(6)7-4/h2H,3H2,1H3 Copy

  
• IUPAC Standard InChIKey: QOTQFLOTGBBMEX-UHFFFAOYSA-N Copy
• CAS Registry Number: 591-12-8
• 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: α-Angelica lactone; β,γ-Angelica lactone; δ2-Angelica lactone; 3-Pentenoic acid, 4-hydroxy-, γ-lactone; 4-Hydroxy-3-pentenoic acid γ-lactone; 5-Methylfuran-2(3H)-one; Penten-3-oic acid, 4-hydroxy-, γ-lactone; 4-Hydroxypent-3-enoic acid lactone; γ-Methyl-β,γ-crotonolactone; 5-Methyl-2(3H)-furanone; 2,3-Dihydro-5-methyl-2-furanone; 2-Oxo-5-methyl-2,3-dihydrofuran; NSC 654; Angelica lactone; 2,3-Dihydro-5-methylfuran-2-one; 5-Methyl-3H-furan-2-one; 5-Methyl-2(3H)-furanone (α-angelicalactone)
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• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Phase change data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
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Reaction 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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

=

By formula: C₅H₆O₂ = C₅H₆O₂

Gas phase ion energetics 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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

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.

Taskinen, 1994
Taskinen, E., Relative thermodynamic stabilities of γ-methylene-γ-butyrolactone and α-angelicalactone, Tetrahedron, 1994, 50, 1885-1888. [all data]

Thorstad, Undheim, et al., 1975
Thorstad, O.; Undheim, K.; Cederlund, B.; Hornfeldt, A.-B., Ionisation potentials in tautomeric analysis of 2-hydroxy derivatives of thiophenes, selenophenes, and furans, Acta Chem. Scand. Ser. B:, 1975, 29, 647. [all data]

Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References

• Symbols used in this document:
  

  ΔrH°	Enthalpy of reaction at standard conditions

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