Table 1 Validation parameters for ephedrine, glycyrrhizic acid and amygdalin by high performance liquid chromatography
From: Antitussive, anti-pyretic and toxicological evaluation of Ma-Xing-Gan-Shi-Tang in rodents
Compound | Concentration range (μg/mL) | R2 | Linear regression | Intra-D (%) | Inter-D (%) |
|---|---|---|---|---|---|
Ephedrine | 6.25–100 | 0.997 | Y = 0.454x-0.0356 | 1.00–2.74 | 0.98–3.02 |
Glycyrrhizic acid | 6.25–100 | 0.999 | Y = 0.052x + 0.0046 | 0.34–3.76 | 0.62–2.84 |
Amygdalin | 6.25–100 | 0.990 | Y = 0.0645x + 0.0788 | 1.61–4.33 | 1.48–3.67 |