three newer cephalosporins ( cefamandole , cefoxitin and cefazaflur ) were investigated , in comparison with three older agents ( cephalothin , cephaloridine and cefazolin ) to determine their stability to beta-lactamases of gram-negative bacilli , and to correlate this with their antibacterial activity .
C0007546
cefazolin
C0279516
antibacterial