Quantitative Determination of Lercanidipine Enantiomers in Commercial Formulations by Capillary Electrophoresis

Table 4

Results of the system suitability test for LER enantiomer analysis.

Parameter	USP recommendation	Day	(S-LER)	(R-LER)
Migration time	RSD^a (%) <2	1	0.07	0.07
		2	0.3	0.3
Plates number	Values >2000	1	357 475	328 250
		2	354 674	324 078
Asymmetry	Values <2	1	1.2	1.2
		2	1.2	1.2
Resolution	Values >2	1	2.0
		2	2.0
Purity peak	Values^≈ 1	1	0.9	0.9

Values from five replicates analyses, RSD (%), relative standard deviation expressed as a percentage, and ^≈values almost equal to.