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2-Amino-1-naphthol-4-sulfonic acid567-13-5100 % similar Naphthionic acid84-86-661 % similar 2-Nitroso-1-naphthol-4-sulfonic acid3682-32-460 % similar 1-Amino-2-naphthol-4-sulfonic acid116-63-259 % similar Laurent acid84-89-957 % similar 2-Aminophenol-4,6-disulfonic acid120-98-955 % similar Orthanilic acid88-21-154 % similar 2-Naphthylamine-4,8-disulfonic acid131-27-153 % similar 3-Amino-5-chloro-2-hydroxybenzenesulfonic acid88-23-353 % similar 2-Amino-1,5-naphthalenedisulfonic acid117-62-451 % similar Armstrong's acid81-04-950 % similar 1-Naphthol-4-sulfonic acid84-87-750 % similar 5,6-Diaminonaphthalene-1,3-disulfonic acid73692-57-649 % similar S Acid83-64-749 % similar 4,6-Diamino-1,3-benzenedisulfonic acid137-50-849 % similar 1,3,5-Naphthalenetrisulfonic acid6654-64-448 % similar 2-Amino-4-nitrophenol-6-sulfonic acid96-67-347 % similar Tobias acid81-16-346 % similar L Acid117-59-946 % similar Aniline-2,4-disulfonic acid137-51-946 % similar