the s molecular structure of cephradine

antibiotic model molecule treatment formula science biochemistry atomic chemical structure medicine chemistry molecular composition cephradine medical drug cephalexin skeletal element pharmaceutical aromatic cephapirine formulation cefalosporin cephalothin cephalosporin atom 2d medication organic cephaloridine structural cephadroxil isolated cephazolin background experiment vector cefradine cephradin anspor