Description_x000D_ General description_x000D_ Chemical structure: ß-lactam_x000D_ Application_x000D_ Piperacillin is a semisynthetic, broad-spectrum ureidopenicillin antibiotic. It is derived from ampicillin. It has been used in pharmacokinetic studies in order to optimize antimicrobial therapy in patients with sepsis. It is used to study piperacillin hypersensitivity reactions and to study multidrug-resistant organisms._x000D_ Biochem/physiol Actions_x000D_ Piperacillin inhibits the last stage of bacterial cell wall synthesis by binding to certain penicillin-binding proteins (PBPs), which results in cell lysis. Cell lysis is mediated by bacterial cell wall autolytic enzymes. Piperacillin may interfere with autolysin inhibitors._x000D_ Packaging_x000D_ 1g,5g,10g_x000D_ Other Notes_x000D_ Keep container tightly closed in a dry and well-ventilated place.Keep in a dry place.