2-Hydroxy-5-nitrometanilic acid 3-Amino-2-hydroxy-5-nitro-benzenesulfonic acid 3-Amino-2-hydroxy-5-nitrobenzenesulfonic acid 96-67-3 Benzenesulfonic acid, 3-amino-2-hydroxy-5-nitro- Kyselina 4-nitro-2-aminofenol-6-sulfonova Metanilic acid, 2-hydroxy-5-nitro- NSC7541 WLN: WSQR CZ BQ ENW