1-NAPHTHALENESULFONAMIDE, 4-(ETHYLSULFONYL)- 4-(Ethylsulfonyl)-1-naphthalenesulfonamide 4-11-00-00615 (Beilstein Handbook Reference) 4-Ethylsulfonylnaphthalene-1-sulfonamide 4-Ethylsulphonylnaphthalene-1-sulfonamide 4-Ethylsulphonylnaphthalene-1-sulphonamide 842-00-2 BRN 2153432 CCRIS 1566 ENS