1-Naphthalenesulfonic acid, 4,4-(2,4-dihydroxy-1,3-phenylene)bis(azo)bis-, disodium salt; Disodium 4,4'-[(2,4-dihydroxy-1,3-phenylene)bis(azo)]bisnaphthalene-1-sulphonate; Fenazo Brown N; Brown RD; Acid Brown GR; Echt Brown N; 4,4'-[(2,4-Dihydroxy-1,3-phenylene)bis(azo)]bis(1-naphthalenesulfonic acid sodium) salt; Acid Brown RX; echtbrown; ACID BROWN M; Pacid Brown RD
