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Table 1 Precisions of angoroside C, cinnamic acid and harpagoside

From: Infrared-assisted extraction followed by high performance liquid chromatography to determine angoroside C, cinnamic acid, and harpagoside content in Scrophularia ningpoensis

Concentration (μg/mL) Intra-day (n = 3) Inter-day (n = 3) RSD (%)
Found RSD (%) Accuracy (%)
Angoroside C
 5 5.31 ± 0.09 1.72 106.16 1.88
 50 51.37 ± 0.76 1.50 102.74 1.69
 200 203.45 ± 1.21 0.60 101.72 0.63
Cinnamic acid
 2.5 2.58 ± 0.04 1.54 103.35 2.29
 25 26.07 ± 0.11 0.42 104.27 1.70
 100 100.32 ± 0.65 0.64 100.32 1.16
Harpagoside
 5 5.26 ± 0.12 2.31 105.25 2.06
 50 51.75 ± 0.18 0.35 103.50 1.46
 200 203.94 ± 1.34 0.66 101.97 0.99