草酸二甲酯 、
1,4-dimethylthiosemicarbazide 、
sodium cephalothin 、
1,4-dimethyl-3-thioxo-[1,2,4]triazinane-5,6-dione 以4.6 g (58.0%)的产率得到sodium salt of (7R)-3-[[(1,4,5,6-tetrahydro-1,4-dimethyl-5,6-dioxo-as-triazin-3-yl)-thio]-methyl]-7-[2-(2-thienyl)-acetamido]-3-cephem-4-carboxylic acid