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4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt548-80-137 % similar 1-Naphthol-3,6-disulfonic acid578-85-837 % similar Sodium O-phenolsulfonate1300-51-236 % similar Mordant black PV2052-25-736 % similar Tiron (chemical)149-45-136 % similar 2-Naphthol-3,6-disulfonic acid disodium salt135-51-336 % similar 2-Naphthalenesulfonic acid, 7,7′-(carbonyldiimino)bis[4-hydroxy-, sodium salt (1:2)20324-87-236 % similar Sodium 2-naphthalenesulfonate532-02-536 % similar Phenyl γ-acid119-19-735 % similar Phenyl J acid119-40-435 % similar Formaldehyde-β-naphthalenesulfonic acid polymer sodium salt36290-04-735 % similar Acid orange 20523-44-435 % similar Direct red 752829-43-835 % similar Thorin (chemistry)3688-92-435 % similar Sodium 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazenyl]-2,7-naphthalenedisulfonate (4:1)68504-35-834 % similar Sodium 6-hydroxy-2-naphthalenesulfonate135-76-234 % similar 2-Aminobenzene-1,4-sulfonic acid monosodium salt24605-36-534 % similar 7-Amino-4-hydroxy-2-naphthalenesulfonic acid87-02-534 % similar Gamma acid90-51-734 % similar Sunset yellow FCF2783-94-034 % similar