2-Methoxy-5-sulfoaniline 2-Methoxyaniline-5-sulfonic acid 3-AMINO-4-METHOXYBENZENESULFONIC ACID 4-METHOXYMETANILIC ACID 98-42-0 Benzenesulfonic acid, 3-amino-4-methoxy- Metanilic acid, 4-methoxy- NSC74459 o-Anisidine-4-sulfonic acid o-Anisidine-p-sulfonic acid