Novel LC Method Development and Validation for Simultaneous Determination of Montelukast and Doxofylline in Bulk and Pharmaceutical Dosage Forms

Table 1

System suitability results.

Standard		Average	SD	%RSD
Montelukast	Retention time	4.79	0.002449	0.05
	Area	507292.8	4646.642788	0.91
	Resolution	12.414	0.074699398	0.6
	Theoretical plates	5660.126	88.82016032	1.56
	Asymmetry	0.948	0.017888544	1.88
Doxofylline	Retention time	1.97	0.000837	0.04
	Area	11536096.2	11488.81385	0.099
	Resolution	0	0	0
	Theoretical plates	1541.768	11.65102442	0.75
	Asymmetry	0.958	0.004472136	0.46