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2-Amino-4-nitrophenol-6-sulfonic acid96-67-339 % similar 2-Amino-4-(methylsulfonyl)phenol98-30-638 % similar 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid monosodium salt5460-09-338 % similar Policresulen101418-00-238 % similar 8-Hydroxy-1,6-naphthalenedisulfonic acid117-43-138 % similar 4-Amino-2-sulfobenzoic acid527-76-438 % similar Tobias acid81-16-338 % similar 2-Amino-3,5-dimethylbenzenesulfonic acid88-22-238 % similar 4-Chloro-3-nitrobenzenesulfonic acid121-18-637 % similar 7-Amino-4-hydroxy-2-naphthalenesulfonic acid87-02-537 % similar Gamma acid90-51-737 % similar 2,4,5-Trichlorobenzenesulfonic acid6378-25-237 % similar 4-Nitrobenzenesulfonic acid138-42-137 % similar 2,5-Dimethylbenzenesulfonic acid609-54-137 % similar 1-Naphthol-4-sulfonic acid84-87-737 % similar 6-Amino-5-bromopyridine-3-sulfonic acid247582-62-337 % similar Collidinium P-toluenesulfonate59229-09-337 % similar 3-Nitrobenzenesulfonic acid98-47-537 % similar Ensulizole27503-81-736 % similar Sulfosalicylic acid dihydrate5965-83-336 % similar