The molecule is a 4-hydroxy-3-(3-oxo-1-phenylbutyl)-2H-1-benzopyran-2-one that has (R)-configuration (the racemate is warfarin, an anticoagulant drug and rodenticide). It is a conjugate acid of a (R)-warfarin(1-). It is an enantiomer of a (S)-warfarin.
4-hydroxy-3-[(1R)-3-oxo-1-phenylbutyl]chromen-2-one