3-carbethoxymethyl-1,2,4-triazole-5-thiol sodium salt 、 7-(D-α-t-butoxycarbonylaminophenylacetamido)-3-(5-carbethoxymethyl-1,2,4-triazol-3-ylthiomethyl)-3-cephem-4-carboxylic acid 在
三氟乙酸 作用下,
生成 7-(D-α-Aminophenylacetamido)-3-(5-carbethoxymethyl-1,2,4-triazol-3-ylthiomethyl)-3-cephem-4-carboxylic acid