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4-Nitroaniline-2-sulfonic acid96-75-343 % similar 4-Formylbenzenesulfonic acid5363-54-242 % similar Dibenzofuran-2-sulphonic acid83863-63-242 % similar 4-Pyridinesulphonic acid5402-20-042 % similar 1,2-Phenylenediamine sulfate74710-09-142 % similar 3-(Acetylamino)-5-amino-4-hydroxybenzenesulfonic acid40306-75-042 % similar Laurent acid84-89-942 % similar 4-Amino-2,5-dichlorobenzenesulfonic acid88-50-642 % similar 2-Aminophenol-4-sulfonamide98-32-842 % similar Poly(4-styrenesulfonic acid)28210-41-541 % similar p-Toluenesulfonic acid monohydrate6192-52-541 % similar 4-Ethylbenzenesulfonic acid98-69-141 % similar 2-Amino-1,5-naphthalenedisulfonic acid117-62-441 % similar 2-Amino-1-naphthol-4-sulfonic acid567-13-541 % similar 5-Sulfosalicylic acid97-05-241 % similar 7-Amino-1,3,5-naphthalenetrisulfonic acid27310-25-441 % similar Peri acid82-75-741 % similar 2-Amino-4-(methylsulfonyl)phenol98-30-641 % similar 5-Acetamido-2-aminobenzenesulfonic acid96-78-640 % similar 2,2′-Benzidinedisulfonic acid117-61-340 % similar