Synonyms: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 3,3-dimethyl-7-oxo-6-(2-phenoxyacetamido)-, monosodium salt (8CI);4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,3,3-dimethyl-7-oxo-6-[(phenoxyacetyl)amino]-, sodium salt, [2S-(2a,5a,6b)]-; Penicillin V sodium salt; Phenoxymethylpenicillinsodium; Phenoxymethylpenicillin sodium salt; Sodium penicillin V