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Table 1 Concentration, calibration curve, regression data, LODs and LOQs for THS, DISS, and catalpol by HPLC

From: Neuroprotection and spatial memory enhancement of four herbal mixture extract in HT22 hippocampal cells and a mouse model of focal cerebral ischemia

Compounds Wavelength (nm) Concentration (%) Calibration curve r2 LOD (μg/ml) LOQ (μg/ml)
THS 254 3.085 ± 0.271 y = 3284.72x + 2.00 0.999 1.41 4.27
DISS 254 0.352 ± 0.058 y = 4289.06x + 47.95 0.999 0.59 1.79
Catalpol 203 0.785 ± 0.059 y = 1253.49x + 31.37 0.999 0.63 1.91