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Precision, repeatability, and stability of five compounds (RSD%, n = 5).
| Compound | Precision RSD | Repeatability RSD (n-butanol extract) |
Repeatability RSD (Ethyl acetate extract) |
Stability RSD (n-butanol extract) |
Stability RSD (Ethyl acetate extract) |
|---|---|---|---|---|---|
| Catalpol | 0.09 | 0.31 | – | 1.71 | – |
| Verbascoside | 0.89 | 0.33 | 1.32 | 0.37 | 0.84 |
| Isoacteoside | 0.15 | 0.53 | 1.35 | 0.61 | 0.48 |
| Luteolin | 0.59 | – | 0.97 | – | 1.02 |
| Apigenin | 0.43 | – | 1.93 | – | 1.12 |
