the in vitro susceptibilities of various causative organisms recently isolated from patients with primary respiratory tract infections to brl 25000 ( a formulation of amoxicillin , 2 parts , and potassium clavulanate , 1 part ) , amoxicillin ( ampc ) , cefaclor ( ccl ) , cephalexin ( cex ) , cefadroxil ( cdx ) and cefroxadine ( cxd ) were determined . beta-lactamase producing strains were detected by nitrocefin chromogenic method and pcg acidometric method .
C0007716
cephalexin
C0007538
cefadroxil