sodium 3,4-dioxonaphthalene-1-sulfonate sodium 3,4-dioxo-1-naphthalenesulfonate sodium 3,4-diketonaphthalene-1-sulfonate 2066-93-5 521-24-4 1-NAPHTHALENESULFONIC ACID, 3,4-DIHYDRO-3,4-DIOXO-, SODIUM SALT AI3-50008 EINECS 208-308-9 Sodium 1,2-naphthoquinone-4-sulfonate Sodium 3,4-dihydro-3,4-dioxo-1-naphthalenesulfonate Sodium 3,4-dioxonaphthalene-1-sulphonate Sodium beta-naphthoquinone-4-sulfonate beta-Naphthoquinone-4-sulfonate sodium salt 1,2-Naphthoquinone-4-sulfonic acid, sodium salt ST5411433 N1766_SIGMA 1,2-Naphthoquinone-4-sulfonic acid sodium salt 226017_ALDRICH 3,4-Dihydro-3,4-dioxo-1-naphthalenesulfonic acid sodium salt Folin's reagent 70382_FLUKA