Simultaneous Quantification of Gallic Acid, Bergenin, Epicatechin, Epicatechin Gallate, Isoquercitrin, and Quercetin-3-Rhamnoside in Rat Plasma by LC-MS/MS Method and Its Application to Pharmacokinetics after Oral Administration of Ardisia japonica Extract

Table 2

The calibration curves, linearity range, and LLOQs of 6 compounds ().

Compounds	Regression equation		Linearity range	LLOQ (ng ml^−1)
Gallic acid		0.9920	2–500	2
Bergeninum		0.9983	2–500	2
Epicatechin		0.9984	4–1000	4
Epicatechin gallate		0.9940	2–500	2
Isoquercitrin		0.9964	1–250	1
Quercetin-3-rhamnoside		0.9971	0.4–100	0.4