20074-69-5

Einecs 243-502-7 7-amino-4-hydroxynaphthalene-2-sulfonate Sodium 7-amino-4-hydroxynaphthalene-2-sulfonate sodium 7-amino-4-hydroxynaphthalene-2-sulphonate 6-Amino-1-hydroxy-3-naphthalenesulfonic acid sodium salt 7-Amino-4-hydroxy-2-naphthalenesulfonic acid sodium salt