Isolation and Identification of Piperacillin Amide as an Impurity in Piperacillin
作者:Marshall M. Siegel、Richard Mills、Lane Gehrlein、William E. Gore、George Morton、T. Chang、Donna Cosulich、Jeffrey Medwid、P. Mirando
DOI:10.1002/jps.2600730417
日期:1984.4
Piperacillinamide (IV) was successfully identified as the predominant impurity in commercial lots of piperacillin monohydrate (III). The impurity was isolated via a preparative liquid chromatographic scheme utilizing Florisil as the adsorbent and a mobile phase of water-acetonitrile (4:96, v/v). The isolated component had nearly the same reverse-phase HPLC properties as piperacillin and was chemically