Simultaneous Determination of Schisandrin and Promethazine with Its Metabolite in Rat Plasma by HPLC-MS/MS and Its Application to a Pharmacokinetic Study

Figure 1

Chemical structure of (a) promethazine hydrochloride, (b) PMZSO, (c) schisandrin, (d) metronidazole, and (e) bifendate.

(a)

(b)

(c)

(d)

(e)