Furantetracarboxylic acid

Furantetracarboxylic acid
IUPAC name furan-2,3,4,5-tetracarboxylic acid
Identifiers
CAS number	20416-04-0 Y
PubChem	237617
	Jmol-3D images	Image 1
SMILES C1(=C(OC(=C1C(=O)O)C(=O)O)C(=O)O)C(=O)O
Properties
Molecular formula	C8H4O9
Molar mass	244.11 g/mol
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

In chemistry, furantetracarboxylic acid is an organic compound with formula C
8H
4O
9, or (C₄O)(-(CO)OH)₄, which can be viewed as deriving from furan C
4H
4O through replacement of the four hydrogen atoms by carboxyl functional groups -(CO)OH.

By removal of four protons, the acid is expected to yield the anion C
8O4−
9, furantetracarboxylate, which is one of the oxocarbon anions (consisting solely of oxygen and carbon. By loss of 1 through 3 protons it forms the anions C
8H
3O−
9, C
8H
2O2−
9, and C
8H
1O3−
9, called respectively trihydrogen-, dihydrogen-, and hydrogenfurantetracarboxylate. The same names are used for the corresponding esters.

The acid can be obtained by from dioxalylsuccinate.^[1][2][3]

The salt rubidium trihydrogenfurantetracarboxylate RbH
3C
8O
9 crystallizes as white needles.^[4]

See also

• Methanetetracarboxylic acid C
  5H
  4O
  8
• Ethylenetetracarboxylic acid C
  6H
  4O
  8
• Benzoquinonetetracarboxylic acid C
  10H
  4O
  10

References