Table 1.

Method validation data

Compounds	Regression equation	Linearity (μg/mL)	R 2	LOD (μg/mL)	LOQ (μg/mL)	Intraday Precision (n = 6)	Interday Precision (n = 3)
4	y = 237.7x + 254.6	0.195–100	0.997	0.012	0.04	0.42	1.8
7	y = 196.9x + 204.3	0.195–100	0.997	0.012	0.04	0.57	1.6
14	y = 232.8x + 255.4	0.195–100	0.996	0.012	0.04	0.32	1.7
16	y = 236.5x + 87.92	0.195–50	0.998	0.048	0.14	0.59	1.2