Coumalic_acid
Coumalic acid
Chemical compound
Coumalic acid is an organic compound with the molecular formula C6H4O4. Its melting point is around 210 °C.
In laboratory coumalic acid may be obtained by self-condensation of malic acid in fuming sulfuric acid:[1]
Note that this scheme is incorrect. 4 H2O and 2 CO (carbon monoxide, not carbon dioxide) are liberated during the condensation.