TABLE 7.

Chemical Structures of 3-Position Side Chains of Penicillins and Cephalosporins

Similar Structure/Possible Cross-Reactivity Within GroupDissimilar Structure/ Unlikely Cross-Reactivity: Not Related
RelatedRelatedRelatedRelatedRelatedRelatedRelated
CephradineCefmetazoleCephapirinCeftazidimeCefuroximeCefdinirCeftibutenCefatrizine
CefadroxilCefoperazoneCefotaximeCefsulodinCefoxitinCefiximeCeftizoximeCefotiam
CephalexinCefotetanCephalothinCefpodoxime
CefamandoleCefprozil
Ceftibuten
Ceftriaxone
Cefonicid
Cefepime
Cefotiam
Cefazolin
Cephaloridine
Cefaclor