A Validated RP HPLC-PAD Method for the Determination of Hederacoside C in Ivy-Thyme Cough Syrup

Table 2

Repeatability and intermediate precision of the HPLC method for the determination of hederacoside C in Ivy-Thyme cough syrup.

Retention time mean (min)±SD    𝑛 = 6	Concentration mean (mg/mL) 𝑛=6	CV (%) (repeatability)	CV (%) (intermediate precision)
26.0±0.1	0.1	1.83	1.81

𝑛: Number of determinations (number of sample solutions (at 0.1 mg/mL) prepared and injected).
SD: Standard deviation.
CV: Coefficient of variation (RSD).