Systematic Study on a Quantitative Analysis of Multicomponents by Single Marker (QAMS) Method for Simultaneous Determination of Eight Constituents in Pneumonia Mixture by UPLC-MS/MS

Figure 1

The chemical structures of the investigated compounds: (a) (R, S)-goitrin, (b) ephedrine hydrochloride, (c) pseudoephedrine hydrochloride, (d) chlorogenic acid, (e) amygdalin, (f) baicalein, (g) ammonium glycyrrhizinate, and (h) baicalin.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)