Substituted 7.beta.-amidino-.DELTA..sup.3 -cephem-4-carboxylic acids, pharmaceutically acceptable, non-toxic salts and esters thereof, antibacterial compositions containing these compounds and methods and methods of using the same against infection diseases.
7-β-酰胺基-Δ3-
头孢菌素-4-
羧酸及其药用可接受的、无毒的盐和酯,含有这些化合物的抗菌组合物,以及使用这些化合物对抗感染性疾病的方法。