2,4-Dinitro-1-naphthol-7-sulfonic acid 2,4-Dinitronaphtholsulfonic acid 2-NAPHTHALENESULFONIC ACID, 5,7-DINITRO-8-HYDROXY- 2-Naphthalenesulfonic acid, 8-hydroxy-5,7-dinitro- 4-11-00-00617 (Beilstein Handbook Reference) 483-84-1 549-34-8 55482-31-0 68698-86-2 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic acid 8-Hydroxy-5,7-dinitronaphthalene-2-sulphonic acid 846-70-8 AI3-03274 BRN 2708476 DNNS EINECS 207-600-3 Flavianic acid NSC 243753 Naphthol Yellow