Method Development and Validation for the Simultaneous Determination of Fexofenadine Hydrochloride and Montelukast Sodium in Drug Formulation Using Normal Phase High-Performance Thin-Layer Chromatography

Table 2

Intraday and interday precision of FEX and MTKT (𝑛=6).

Drug	Conc. (ng spot^−1)	Repatability			Intermediate precision
		Found conc. ± SD	% RSD	SE	Found conc. ± SD	% RSD	SE
FEX	2400	2399.91±12.41	0.52	5.08	2400.69±17.75	0.74	7.24
	7200	7204.84±15.53	0.22	6.36	7205.02±8.72	0.12	3.57
	10800	10799.46±10.73	0.09	4.39	10797.67±27.95	0.26	11.41
MTKT	200	200.50±1.49	0.74	0.61	201.32±0.96	0.47	0.39
	600	601.78±1.17	0.19	0.47	600.56±0.72	0.11	0.29
	900	900.65±0.75	0.08	0.30	900.89±0.55	0.06	0.22