Objective To optimize the high performance liquid chromatography (HPLC) method for determining the content of scopoletin from Caulis Erycibes. Methods Methanol-25% HCl ( v/v, 4 : 1) solvent was used to extract scopoletin. HPLC method was performed on Waters XBridge Shield RP18 column (4.6 mm × 250 mm, 5μm) with the mobile phase consisting of acetonitrile ( A) and 0.16% ( v/v) acetic acid ( B) solution by gradient elution. The detection wavelength was 298 nm and the flow rate was set at 1.0 mL/min. Results The linear range of scopoletin from Caulis Erycibes was 2.83-118 μg/mL, and the recovery rate was 99.47% ( sR=1.07%). Conclusion The optimized method is simple, specific and accurate, and can provide reference for content determination of scopoletin in Caulis Erycibes.
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