A LC-MS/MS Method for Quantifying the Schisandrin B and Exploring Its Intracellular Exposure Correlating Antitumor Effect

Table 4

Extraction recovery and matrix effect of Sch.B.

Analyte	Nominal concentration (ng/mL)	Recovery		Matrix effects
		Mean (%) ± SD	RSD (%)	Mean (%) ± SD	RSD (%)
Sch.B	50	91.71 ± 8.02	8.75	88.01 ± 0.78	0.89
	200	85.25 ± 1.40	1.65	94.59 ± 5.62	5.94
	750	88.61 ± 1.79	2.02	91.88 ± 6.73	7.32