Synonyms: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,6-[3-(o-chlorophenyl)-5-methyl-4-isoxazolecarboxamido]-3,3-dimethyl-7-oxo-,monosodium salt (8CI); 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-[[[3-(2-chlorophenyl)-5-methyl-4-isoxazolyl]carbonyl]amino]-3,3-dimethyl-7-oxo-,monosodium salt, (2S,5R,6R)- (9CI);4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-[[[3-(2-chlorophenyl)-5-methyl-4-isoxazolyl]carbonyl]amino]-3,3-dimethyl-7-oxo-,monosodium salt, [2S-(2a,5a,6b)]-;3-(o-Chlorophenyl)-5-methyl-4-isoxazolylpenicillin sodium salt; Ankerbin;Austrastaph; BRL 1621 sodium salt; Cloxacillin sodium; Cloxacillin sodium salt;Cloxapen; Ekvacillin; Gelstaph; Monosodium cloxacillin; Orbenin; Orbeninsodium; Prevencilina P; Prostaphilin A; Prostaphlin A; Sodium3-(O-chlorophenyl)-5-methyl-4-isoxazolylpenicillin; Sodium cloxacillin; Sodiumorbenin; Sodium syntarpen; Staphybiotic; Syntarpen sodium salt; Tegopen