The molecule is trianionic form of pyrroloquinoline quinol arising from deprotonation of the three carboxy groups. It is a tricarboxylic acid trianion and a pyrroloquinoline. It is a conjugate base of a pyrroloquinoline quinol. It is a conjugate acid of a pyrroloquinoline quinol(4-).
2,7-dicarboxy-4,5-dioxido-6H-pyrrolo[2,3-f]quinoline-9-carboxylate