Simultaneous Determination of Bergapten, Imperatorin, Notopterol, and Isoimperatorin in Rat Plasma by High Performance Liquid Chromatography with Fluorescence Detection and Its Application to Pharmacokinetic and Excretion Study after Oral Administration of Notopterygium incisum Extract

Table 1

Calibration curve and LLOQ.

Compounds	Regression equation		Linearity range (ng mL^−1)	LLOQ (ng mL^−1)
Bergapten		0.997	4–1000	4
Imperatorin		0.994	40–10000	40
Notopterol		0.997	4–1000	4
Isoimperatorin		0.997	2–500	2