120-18-3 2-NAPHTHALENESULFONIC ACID 2-Naphthalenesulfonic acid, monohydrate 4-11-00-00527 (Beilstein Handbook Reference) 54257-18-0 AI3-18435 BRN 1955756 EINECS 204-375-3 Kyselina 2-naftalensulfonova [Czech] Naphthalene-2-sulphonic acid beta-Naphthalenesulfonic acid beta-Naphthylsulfonic acid