Formula C8H4O9 | Molar mass 244.11 g/mol | |
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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.
The salt rubidium trihydrogenfurantetracarboxylate RbH
3C
8O
9 crystallizes as white needles.