In the modern pharmaceutical industry, it is critically important to identify and quantify impurities with the highest possible confidence given their potential toxic effects on humans. This report describes the performance of the Agilent 6545 Q - TOF LC/MS system in the determination of metoclopramide pharmaceutical impurities. In this, the 6545 Q - TOF and 1290 Infinity LC system are used to determine metoclo pramide impurities (structures below). Metoclopramide standard prepared at 500 ppm was spiked with all known impurities described in European Pharmacopoeia and two additional impurities at 0.05% (w/w) and 0.01% (w/w) levels. Agilent 6545 四極桿飛行時間液質聯(lián)用系統(tǒng)