Pharmacokinetic Effects of l-Tetrahydropalmatine on Ketamine in Rat Plasma by Ultraperformance Liquid Chromatography Tandem Mass Spectrometry

Figure 1

Molecular structure of ketamine (KET) (a), norketamine (NK) (b), and chlorpheniramine maleate (Chlor-Trimeton, IS) (c).

(a)

(b)

(c)