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2-Naphthylamine-4,8-disulfonic acid131-27-134 % similar Chromotropic acid disodium salt dihydrate5808-22-034 % similar Pyranine6358-69-634 % similar 3-Amino-2-hydroxy-5-sulfobenzoic acid6201-86-134 % similar 2-Amino-5-hydroxynaphthalene-1,7-disulphonic acid6535-70-234 % similar 2-Naphthalenesulfonic acid, 4,6-dihydroxy-, sodium salt (1:1)83732-66-534 % similar 5-Amino-2-(phenylamino)benzenesulfonic acid91-30-534 % similar 1H-Benzimidazole-5-sulfonic acid, 2,3-dihydro-2-thioxo-, sodium salt, hydrate (1:1:2)207511-11-334 % similar Chrysoine resorcinol547-57-934 % similar C.I. Acid blue 19312392-64-234 % similar Azomethine-H monosodium5941-07-134 % similar Diphenyl brown GR3811-71-034 % similar 4-Aminoazobenzene-4′-sulfonic acid104-23-433 % similar 1-Amino-2-naphthol-4-sulfonic acid116-63-233 % similar Diaminogene velour black B2429-73-433 % similar Direct red 752829-43-833 % similar C.I. Acid blue 2228631-66-533 % similar Sodium 2,4-dimethylaniline-6-sulfonate64501-85-533 % similar 6-Aminonaphthalene-1-sulphonic acid81-05-033 % similar 2,4-Dinitrobenzenesulfonic acid89-02-133 % similar