Fig. 6. Characterization of isomers with precursor ions at m/z 717.1456 ppm in DZT: (A) extracted ion chromatography (EIC) of the precursor ions at m/z 717.1456 ± 5 ppm, including peaks 40 (blue trace), 48 (red trace), 51 (orange trace) and 53 (green trace); (B) mobility profiles of the m/z 717.1456 precursor ions of peaks 40, 48, 51 and 53; in addition, among them, peaks 40, 48 and 51 further dissociated into mobility peaks 40a/40b, 48a/48b and 51a/51b, respectively. (C) MS/MS spectrum of the precursor ions at m/z 717.1456 for mobility peaks 40a, 40b, 48a, 48b, 51a, 51b and 53.