1,4-Cyclohexadiene-1-carboxylic acid, 3-[bis(3-carboxy-4-hydroxyphenyl)methylene]-6-oxo- 4431-00-9 ATA Aluminon free acid Aurintricarboxylic acid Benzoic acid, 5-[(3-carboxy-4-hydroxyphenyl)(3-carboxy-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy- NSC4056