Synonyms: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 6-[(1,3-dioxo-3-phenoxy-2-phenylpropyl)amino]-3,3-dimethyl-7-oxo-, [2S-(2a,5a,6b)]-; Malonamic acid,N-(2-carboxy-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-6-yl)-2-phenyl-,1-phenyl ester (8CI); 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-(2-carboxy-2-phenylacetamido)-3,3-dimethyl-7-oxo-, 6-phenyl ester (8CI);Carbenicillin phenyl; Carbenicillin phenyl ester; Carfecillin