Stability-Indicating HPLC Assay for Determination of Idebenone in Pharmaceutical Forms

Table 2

Precision study of the method.

Nominal conc.; (mg/mL)	Intraday precision		Interday precision
	Calculated conc.; (mg/mL),; mean ± SD	RSD (%)	Calculated conc.; (mg/mL),; mean ± SD	RSD (%)
3.5	3.46 ± 0.03	0.95	3.45 ± 0.02	0.58
4.5	4.53 ± 0.03	0.76	4.58 ± 0.03	0.69
6.5	6.51 ± 0.05	0.81	6.47 ± 0.04	0.65