Identification and characterization of substance impurities present in any small molecule or in any step of its synthetic process. Our team expertise together with state-of-the-art equipment (Agilent’s HPLC/QTOF 6540, Ultimate3000-LXQ), allows the separation (through preparative HPLC) and accurate mass determination of the different impurities and their fragmentations. The proposed impurities are then synthesized by our Synthetic Chemistry experts and compared with the real samples, after which the complete characterization of matching samples using both HPLC/MS and NMR is done.