(4E)-4-[(2,4-dimethylphenyl)hydrazinylidene]-3-oxonaphthalene-2,7-disulfonate;xylidineponceau3rs;ACID RED 26;ACID RED 26 CI 16150;ACID SCARLET 2R;4-(2,4-DIMETHYLPHENYLAZO)-3-HYDROXY-2,7-NAPHTHALENEDISULFONIC ACID, DISODIUM SALT;disodium 1-(2,4-dimethylphenylazo)-2-hydroxynaphthalene-3,6-disulphonate;Ponceau red RR
