Synonyms: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,6-[[3-(2-bromophenyl)-2-(methylthio)-1-oxo-2-propenyl]amino]-3,3-dimethyl-7-oxo-,monosodium salt, [2S-[2a,5a,6b(Z)]]-; 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 6-[o-bromo-a-(methylthio)cinnamamido]-3,3-dimethyl-7-oxo-,monosodium salt, (Z)- (8CI); P 212