Furantetracarboxylic acid

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.

Furantetracarboxylic acid

Names
Preferred IUPAC name Furantetracarboxylic acid
Identifiers
CAS Number	20416-04-0 Y
3D model (JSmol)	Interactive image
ChemSpider	207476
PubChem CID	237617
UNII	526V46EZC7 Y
CompTox Dashboard (EPA)	DTXSID40285293
InChI InChI=1S/C8H4O9/c9-5(10)1-2(6(11)12)4(8(15)16)17-3(1)7(13)14/h(H,9,10)(H,11,12)(H,13,14)(H,15,16) Key: IREPGQRTQFRMQR-UHFFFAOYSA-N
SMILES C1(=C(OC(=C1C(=O)O)C(=O)O)C(=O)O)C(=O)O
Properties
Chemical formula	C8H4O9
Molar mass	244.11 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

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
₈HO³⁻
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