The molecule is a dicarboxylic acid dianion obtained by deprotonation of the carboxy groups of 5,10-dihydrophenazine-1,6-dicarboxylic acid; major species at pH 7.3. It is a conjugate base of a 5,10-dihydrophenazine-1,6-dicarboxylic acid.
5,10-dihydrophenazine-1,6-dicarboxylate