apalcillin , a naphthydridine derivative of ampicillin , was compared with ticarcillin , azlocillin , mezlocillin , piperacillin , cefotaxime , and cefoperazone against gram-negative and gram-positive bacterial isolates and with cefsulodin and tobramycin against pseudomonas aeruginosa .
C0002680
ampicillin
C0031955
piperacillin