2-Naphthylamine-3,6-Disulfonic Acid Sodium Salt, 3-amino-2,7-naphthalenedisulfonic acid disodium salt, disodium 3-azanylnaphthalene-2,7-disulfonate, Monosodium-2-Naphthylamine-3,6-Disulfonate, Amino R Salt, 3-Aminonaphthalene-2,7-disulfonic acid disodium salt, 2-Amino-3,6-naphthalenedisulfonic acid,disodium salt, disodium 3-aminonaphthalene-2,7-disulfonate