Fig. 5

Chromatogram of separation of the four drugs at 220 nm under the optimum chromatographic conditions: 10 µg/mL of a DES, b RUP, c FEX, d MKT, while e fumarate peak
Chromatogram of separation of the four drugs at 220 nm under the optimum chromatographic conditions: 10 µg/mL of a DES, b RUP, c FEX, d MKT, while e fumarate peak