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Armstrong's acid81-04-931 % similar 4-Chlororesorcinol95-88-531 % similar Hydroxyquinol533-73-331 % similar 2-Aminobenzene-1,4-sulfonic acid monosodium salt24605-36-531 % similar Aminomalononitrile p-toluenesulphonate5098-14-631 % similar 5,6-Diaminonaphthalene-1,3-disulfonic acid73692-57-631 % similar Calcium dobesilate20123-80-231 % similar Potassium 2,5-dihydroxybenzenesulfonate21799-87-131 % similar Tobias acid81-16-331 % similar 2,2′-Benzidinedisulfonic acid117-61-331 % similar 8-Amino-2-naphthol118-46-731 % similar 2-Methyl-1H-indol-5-ol13314-85-731 % similar 2,2′-Azinobis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt30931-67-031 % similar 5-Amino-2-naphthol86-97-531 % similar 3-[(Ethylphenylamino)methyl]benzenesulfonic acid101-11-131 % similar Chrysoine resorcinol547-57-931 % similar 4,6-Diamino-1,3-benzenedisulfonic acid137-50-831 % similar 2,6-Dihydroxyanthraquinone84-60-631 % similar 3-Amino-2-hydroxy-5-sulfobenzoic acid6201-86-130 % similar 6-Amino-N-methyl-2-naphthalenesulfonamide104295-55-830 % similar