Synonyms: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,6-[[(2Z)-3-(2-chlorophenyl)-2-(methylthio)-1-oxo-2-propenyl]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-chlorophenyl)-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-chloro-a-(methylthio)cinnamamido]-3,3-dimethyl-7-oxo-, sodium salt, (Z)- (8CI);Thiocillin