1-Butanesulfonic acid,4-chloro-1-hydroxy-, sodium salt (1:1) , with CAS number of 54322-20-2, can be called 4-Chloro butyraldehyde sodium bisulphite adduct ; 4-chloro-1-hydroxybutane-1-sulphonic acid sodium salt ; 4-chloro-1-hydroxy butane sulphonic acid sodium salt ; sodium 4-chloro-1-hydroxybutanesulfonate ; 4-chloro-1-hydroxy-1-butanesulfonic acid monosodium salt ; 4-chlorobutyraldehyraldehyde sodium bisulfite adduct ; sodium 4-chloro-1-hydroxybutane sulphonate ; sodium 4-chloro-1-hydroxybutane-1-sulfonate .