2-Oxo-2H-Pyran-5-Carboxylic Acid

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Properties Simple | Detailed

Formula C6H4O4
IUPAC Name 6-oxopyran-3-carboxylic acid
Molecular Mass 140.094 g·mol−1
Heat of Formation -586.0 ± 16.7 kJ·mol−1
Dipole Moment 2.50 ± 1.08 D
Volume 147.04 Å 3
Surface Area 154.23 Å 2
HOMO Energy -10.27 ± 0.55 eV
LUMO Energy -1.22 ± eV
Point Group Symmetry Cs
Synonyms
  • .alpha.-pyrone-5-carboxylic acid
  • 2-oxo-1,2h-pyran-5-carboxylic acid
  • 2-oxopyran-5-carboxylic acid
  • 2-pentenedioic acid, 4-(hydroxymethylene)-, .delta.-lactone
  • 2-pentenedioic acid, 4-(hydroxymethylene)-, delta-lactone
  • 2-pyrone-5-carboxylic acid
  • 2h-pyran-5-carboxylic acid, 2-oxo-
  • 6-ketopyran-3-carboxylic acid
  • 6-oxo-3-pyrancarboxylic acid
  • alpha-pyrone-5-carboxylic acid
  • coumalic acid
  • cumalic acid
CAS Number(s)
  • 500-05-0
InChIKey ORGPJDKNYMVLFL-UHFFFAOYSA-N
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