1,3-Diaminobenzene-4-sulfonic acid 1,3-Diaminobenzene-6-sulfonic acid 1,3-Diaminobenzenesulfonic acid 1,3-Phenylenediamine-4-sulfonic acid 2,4-Diaminobenzenesulfonic acid 2,4-Diaminobenzenesulphonic acid 2-14-00-00443 (Beilstein Handbook Reference) 3177-22-8 51247-58-6 88-63-1 93920-38-8 BRN 2694057 Benzenesulfonic acid, 2,4-diamino- EINECS 201-846-5 Kyselina 1,3-fenylendiamin-4-sulfonova [Czech] Kyselina 2,4-diaminobenzensulfonova [Czech] NSC 7835 m-Phenylenediamine-4-sulfonic acid m-Phenylenediaminesulfonic acid o-Aminosulfanilic acid