2-Naphthalenesulfonicacid, 7-amino-4-hydroxy-3-[(2-sulfophenyl)azo]- (9CI); 2-Naphthalenesulfonicacid, 7-amino-4-hydroxy-3-[(o-sulfophenyl)azo]- (7CI,8CI);6-Amino-2-(2-sulfophenylazo)-1-naphthol-3-sulfonic acid;7-Amino-4-hydroxy-3-(2-sulfophenylazo)-2-naphthalenesulfonic acid
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