1,6-Cleve's acid 1-Amino-6-naphthalenesulfonic acid 1-Amino-6-sulfonaphthalene 1-NAPHTHYLAMINE-6-SULFONIC ACID 119-79-9 2-Naphthalenesulfonic acid, 5-amino- 4-14-00-02804 (Beilstein Handbook Reference) 5-Amino-2-naphthalenesulfonic acid 5-Aminonaphthalene-2-sulphonic acid 5-Naphthylamine-2-sulfonic acid BRN 1819887 Cleve's acid, mixed Cleve's acid-1,6 Cleve's beta-acid EINECS 204-351-2 Kyselina 1-naftylamin-6-sulfonova [Czech] Kyselina cleve [Czech] NSC 31506