(6
R)-3-(4-methyl-piperazine-1-carbothioylsulfanylmethyl)-8-oxo-7
t-(2-thiophen-2-yl-acetylamino)-(6
rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid; sodium salt 、
碘甲烷 生成
3-<(4,4-Dimethyl-piperazinium)-thiocarbonylthiomethyl>-7-<2-thiophenacetamido>-3-cephem-4-carboxylat