Figure 13: HPLC chromatogram of a resolved mixture of 10 g mLL-1 OZ (tR=4.298) and 10 g mLL-1 OZ Deg (tR=2.267 and 3.050), mobile phase is acetonitrile: water (50:50 v/v, 0.2% triethylamine, pH adjusted to 4 using o-phosphoric acid).