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2-Nitrobenzenesulfonic acid80-82-032 % similar Naphthalene-2-sulfonic acid120-18-332 % similar Chromotropic acid148-25-432 % similar 4-Pyridinesulphonic acid5402-20-032 % similar 4-Hydroxybenzenesulfonic acid98-67-932 % similar 1,2,4,5-Tetraaminobenzene tetrahydrochloride4506-66-532 % similar Ferron547-91-132 % similar 2-Methyl-5-nitrobenzenesulfonic acid121-03-932 % similar 2-Nitroso-1-naphthol-4-sulfonic acid3682-32-432 % similar 7-Amino-4-hydroxy-2-naphthalenesulfonic acid87-02-532 % similar Gamma acid90-51-732 % similar 2-Chloro-5-nitrobenzenesulfonic acid96-73-132 % similar 1H-Benzotriazole-4-sulfonic acid26725-50-832 % similar 2,5-Diaminotoluene sulfate615-50-932 % similar 2-Chloro-p-phenylenediamine sulfate61702-44-132 % similar 2-Chloro-p-phenylenediamine sulfate6219-71-232 % similar Sulfoisophthalic acid22326-31-431 % similar Phenol, 2-amino-, sulfate (2:1)67845-79-831 % similar ABPS7545-50-831 % similar p-Toluenesulfonic acid104-15-431 % similar