SMILES: C1=CC=C2C(=C1)C(=O)C=C(C2=O)C(=O)[O-]
Description: The molecule is a dioxo monocarboxylic acid anion that is the conjugate base of 1,4-naphthoquinone-2-carboxylic acid, obtained by the deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a 1,4-naphthoquinone-2-carboxylic acid.