2-Methoxy-5-sulfoaniline 2-Methoxyaniline-5-sulfonic acid 3-Amino-4-methoxybenzenesulfonic acid 3-Amino-4-methoxybenzenesulphonic acid 4-Methoxymetanilic acid 98-42-0 Benzenesulfonic acid, 3-amino-4-methoxy- EINECS 202-667-5 Metanilic acid, 4-methoxy- (8CI) NSC 74459 o-Anisidine-4-sulfonic acid o-Anisidine-p-sulfonic acid