1-NAPHTHALENESULFONIC ACID, 4-AMINO-5-HYDROXY- 3-14-00-02290 (Beilstein Handbook Reference) 4-Amino-5-hydroxy-1-naphthalenesulfonic acid 4-Amino-5-hydroxynaphthalene-1-sulphonic acid 83-64-7 AI3-23217 Aminonaphthol sulfonic acid S Aminonaphtholsulfonic acid S BRN 2127506 Chicago acid S EINECS 201-491-6 Kyselina 1-amino-8-naftol-4-sulfonova [Czech] Kyselina S [Czech] NSC 10434 S acid