1,4-naphthoquinone-2-sulfonate

1,4-Dioxonaphthalene-2-sulfonic acid

azanium 1,4-dioxonaphthalene-2-sulfonate

1,4-Dihydro-1,4-dioxonaphthalene-2-sulfonic acid

1,4-Dihydro-1,4-dioxo-2-naphthalenesulfonic acid