Antimicrobially active ceph-3-ems having in the 3-position a benzyl or mono-halobenzyl group, preferably with the mono-halo group in the para-position of the phenyl part of the benzyl group.
在3位点上具有苯甲基或单卤代苯甲基基团的具有抗微
生物活性的头孢-3-ems,最好是单卤代基团在苯甲基基团的苯部分的对位。