3-(2-Chloro-6-fluorophenyl)-5-methyl-4-isoxazolylpenicillin sodium monohydrate 34214-51-2 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(3-(2-chloro-6-fluorophenyl)-5-methyl-4-isoxazolecarboxamido)-3,3-dimethyl-7-oxo-, sodium