4-chloro-3-nitro-benzenesulfonic acid,sodium-salt, 4-chloro-3-nitrobenzenesulphonic acid sodium salt, sodium salt of 4-chloro-3-nitrobenzene-sulfonic acid, Sodium-3-nitro-4-chloro-benzene sulfonic acid, Sodium 4-chloro-3-nitrobenzenesulphonate, Sodium 3-nitro-4-chlorobenzenesulfonate, sodium 4-chloro-3-nitrobenzenesulfonate, 4-Chlor-3-nitro-benzolsulfonsaeure,Natrium-Salz