231293.fig.002a
(a)
231293.fig.002b
(b)
231293.fig.002c
(c)
Figure 2: Product ion mass spectra used for building multiple reaction monitoring transitions for (a) PD (the precursor ion: [M+Na]+ at m/z 1247.7), (b) PD3 (the precursor ion: [M+Na]+ at m/z 1409.9), and (c) notoginsenoside R1 (the precursor ion: [M+Na]+ at m/z 995.4).