2-Amino-5-nitrobenzenesulfonic acid 2-Amino-5-nitrobenzenesulphonic acid 3-14-00-01902 (Beilstein Handbook Reference) 4-Nitro-2-sulfoaniline 4-Nitroaniline-2-sulfonic acid 96-75-3 AI3-50019 BRN 2654142 Benzenesulfonic acid, 2-amino-5-nitro- EINECS 202-531-5 NSC 7540 p-Nitroaniline-2-sulfonic acid p-Nitroaniline-o-sulfonic acid