7-aminonaphthalene-2-sulphonic acid;amino-F acid;7-aminonaphthalene-2-sulfonic acid;2-Naphthylamine-7-sulfonic acid;7-Amino-2-naphthalenesulfonic acid;2-Amino-7-naphthalenesulfonic acid;7-azanylnaphthalene-2-sulfonic acid
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