| Synonym | 2-Amino-4-sulfophenol, 2-Aminophenol-4-sulfonic acid, 2-Hydroxy-5-sulfoaniline, 3-Amino-4-hydroxybenzenesulfonic acid, 4-Hydroxy-3-aminobenzenesulfonic acid, 4-Hydroxymetanilic acid, AI3-14898, CCRIS 4584, EC 202-662-8, EINECS 202-662-8, NSC 1491, o-Aminophenol-p-sulfonic acid, 2-Amino-1-phenol-4-sulfonic acid, 3-Amino-4-hydroxybenzenesulphonic acid, Benzenesulfonic acid, 3-amino-4-hydroxy-, Metanilic acid, 4-hydroxy- (8CI), 2-Aminophenol-4-sulfonic acid, 3-Amino-4-hydroxy benzenesulfonic acid, 3-Amino-4-hydroxy sulfonic acid, 2-Amino-1-phenol-4-sulfonic acid, o-Aminophenyl-p-sulfonic acid |