using high-performance liquid chromatography ( hplc ) to separate digoxin from its metabolites digoxigenin , digoxigenin-bis-digitoxoside , and digoxigenin-mono-digitoxoside with subsequent quantitation by 125i radioimmunoassay ( ria ) , we examined the plasma of patients on long-term oral digoxin therapy .
C0012264
digoxigenin
C0012265
digoxin