1-Anthracenesulfonic acid, 9,10-dihydro-5-nitro-9,10-dioxo- 1-Nitro-5-anthraquinonesulfonic acid 1-Nitro-5-sulfoanthraquinone 5-Nitroanthraquinone-1-sulfonic acid 82-50-8 9,10-Dihydro-5-nitro-9,10-dioxo-1-anthracenesulfonic acid NSC5535