7-hydroxy-8-[(E)-phenyldiazenyl]naphthalene-1,3-disulfonate
7-hydroxy-8-[(e)-phenyldiazenyl]naphthalene-1,3-disulfonate
An organosulfonate oxoanion resulting from the removal of a proton from both of the sulfo groups of 7-hydroxy-8-[(<i>E</i>)-phenyldiazenyl]naphthalene-1,3-disulfonic acid.