C.I. Acid Red 106; C.I. Acid Red 106, disodium salt; Acid Red 106 (C.I.); disodium 4-hydroxy-3-phenylazo-5-((p-tolyl)sulphonylamino)naphthalene-2,7-disulphonate; Acid Red 106 (18110); Acid Red 106; disodium (3E)-5-{[(4-methylphenyl)sulfonyl]amino}-4-oxo-3-(2-phenylhydrazinylidene)-3,4-dihydronaphthalene-2,7-disulfonate