Synonyms: Piperazinium,4-(dithiocarboxy)-1,1-dimethyl-, hydroxide, ester with7-[2-(m-chlorophenyl)acetamido]-3-(mercaptomethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid, inner salt (8CI); Piperazinium, 4-[[[[2-carboxy-7-[[(3-chlorophenyl)acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]thio]thioxomethyl]-1,1-dimethyl-,inner salt; 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,7-[2-(m-chlorophenyl)acetamido]-3-(mercaptomethyl)-8-oxo-, ester with 4-(dithiocarboxy)-1,1-dimethylpiperaziniumhydroxide, inner salt (8CI); Cephachlomezine