SMILES: C1=CC(=C(C=C1C(=C2C=CC(=O)C(=C2)C(=O)O)C3=CC(=C(C=C3)O)C(=O)O)C(=O)O)O
Description: The molecule is a member of the class of quinomethanes that is 3-methylidene-6-oxocyclohexa-1,4-diene-1-carboxylic acid in which the methylidene hydrogens are replaced by 4-carboxy-3-hydroxyphenyl groups. The trisodium salt is the biological stain 'chrome violet CG' while the triammonium salt is 'aluminon'. It has a role as a histological dye, an insulin-like growth factor receptor 1 antagonist and a fluorochrome. It is a monohydroxybenzoic acid, a member of quinomethanes and a tricarboxylic acid. It is a conjugate acid of an aurintricarboxylate.