1-Amino-8-naphthalene sulfonate 1-Aminonaphthalene-8-sulfonic acid 1-Naphthalenesulfonic acid, 8-amino- 1-Naphthylamine-8-sulfonic acid 8-AMINO-1-NAPHTHALENESULFONIC ACID 8-Aminonaphthalene-1-sulphonic acid 82-75-7 EINECS 201-437-1 NSC 7798 Naphthylaminemonosulfonic acid S Schollkopf's acid (VAN) alpha-Naphthylamine-8-sulfonic acid peri Acid