The molecule is an organic potassium salt having 2-oxo-3-[(1R)-3-oxo-1-phenylbutyl]-2H-1-benzopyran-4-olate as the counterion (the racemate is warfarin potassium, an anticoagulant drug and rodenticide). It contains a (R)-warfarin(1-). It is an enantiomer of a (S)-warfarin potassium.
potassium;2-oxo-3-[(1R)-3-oxo-1-phenylbutyl]chromen-4-olate