A new and third generation cephalosporin : ceftiofur .

新的第三代头孢菌素--头孢噻呋。

Cephalosporin I asked him what price ?

我问他头孢什么价格?

A broad spectrum semisynthetic antibiotic produced by modifying cephalosporin .

由修改的头孢霉素制成的半合成的大光谱药物。

Determination of residual solvent in cephalosporin antibiotics .

头孢菌素类抗生素残留溶剂的测定。

An important semisynthetic cephalosporin intermediate : 7-adca .

重要的半合成头孢菌素中间体--7-adca。