Table 2.
Analytical condition of HPLC

Conditions
Column Kinetex C18 (4.6 × 250 mm, 5µ, Phenomenex)
Guard column UHPLC C18 (AJ0-8768, Phenomenex)
Column Temperature 25 °C
Mobile phases A (0.1% phosphoric acid 30) : B (Acetonitrile 70)
Flow rate 1.0 mL/min
Wavelength 237 nm
Injection volume 10 µL