Synonyms: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,6-[3-(2-chloro-6-fluorophenyl)-5-methyl-4-isoxazolecarboxamido]-3,3-dimethyl-7-oxo-,sodium salt (7CI);4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-[[[3-(2-chloro-6-fluorophenyl)-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-chloro-6-fluorophenyl)-5-methyl-4-isoxazolyl]carbonyl]amino]-3,3-dimethyl-7-oxo-,monosodium salt, [2S-(2a,5a,6b)]-;Floxacillin sodium;Floxapen;Floxapen sodium;Flucloxacillin sodium salt;Monosodium flucloxacillin;NSC 277175;Sodium[3-(2-chloro-6-fluorophenyl)-5-methyl-4-isoxazolyl]penicillin;Sodium flucloxacillin;Staphylex;