the spectrum of antibacterial activity of cxd is identical with that of cephalexin ( cex ) , but cxd was twofold more effective than cex against escherichia coli and klebsiella pneumoniae , cxd was as stable to penicillinase as cex , but it was hydrolyzed by cephalosporinase , with a relative rate of hydrolysis similar to that of cex .
C0279516
antibacterial
C0007716
cex