Acid brown 2 (C.I. 17605); Fast Brown R; C.I.Acid Brown 14; 2-Naphthalenesulfonic acid, 4-hydroxy-3-[(2-methoxy-5-nitrophenyl)azo]-6-(phenylamino), monosodium salt; Acid Fast Brown R.; C.I.Acid Brown 2; Weak Acid Brown R; 2-Naphthalenesulfonic acid, 3,4-dihydro-3-[2-(2-methoxy-5-nitrophenyl)hydrazinylidene]-4-oxo-6-(phenylamino)-, sodium salt, (3Z)- (1:1); Sodium (3Z)-6-anilino-3-[(2-methoxy-5-nitrophenyl)hydrazono]-4-oxo-3,4-dihydro-2-naphthalenesulfonate
