separation of digoxin from its metabolites was accomplished using a 15 cm x 4.6 mm i.d. , 3-microns octadecylsilyl hplc column and an optimum mobile phase of methanol-ethanol-isopropanol-dehydroascorbic acid ( 52:3:1:45 , v/v ) .
C0001963
methanol
C0001962
ethanol