MENADIONEBISULPHITE 1,2,3,4-Tetrahydro-2-methyl-1,4-dioxo-2-naphthalenesulfonic acid 2-Methyl-1,4-dioxo-1,2,3,4-tetrahydronaphthalene-2-sulfonic acid Menadione bisulfite 2-Naphthalenesulfonic acid, 1,2,3,4-tetrahydro-2-Methyl-1,4-dioxo- menadione sulfonic acid WIXFIQKTHUVFDI-UHFFFAOYSA-N