1-Ethyl-6,8-difluoro-1,4-dihydro-7-(1-imidazolyl)-4-oxoquinoline-3-carboxyl ic acid derivative of the formula: ##STR1## wherein R is hydrogen atom or an alkyl group having 1 to 3 carbon atoms, which have excellent anti-microbial activities and are useful as an anti-microbial agent for the treatment of infectious diseases in warm-blooded animals including human beings, and an anti-microbial composition containing said compound as an active ingredient.
这是一种公式为##STR1##的
羧酸衍
生物,其中R是氢原子或具有1至3个碳原子的烷基,具有优异的抗微
生物活性,可用作治疗包括人类在内的恒温动物感染性疾病的抗微
生物剂,以及包含该化合物作为活性成分的抗微
生物组合物。