TABLE 3.
Optimized chromatographic condition
| Method | Mobile Phase | Gradient(time vs. % of mobile phase B) | Column oven temp. (˚C) | Flow rate(mL/min) |
|---|---|---|---|---|
| Gradient | A: 0.1% HCOOH in water | 0‐05, 15‐40, 35‐95, 40‐95, 42‐05, 45‐05 | 50 | 0.6 |
| B: 0.1% HCOOH in acetonitrile |
Column: Zorbax C18 (4.6 × 150 mm, 3.5 µm).