Synonym
;4-OH-Coumarin ;|4-Coumarinol;|4-Hydroxy Coumarin;|4-Hydroxy-2H-1-benzopyran-2-one ;|4-Hydroxy-2H-1-benzopyran-2-one;|4-Hydroxy-2H-1-benzopyran-2-one; 4-Coumarinol; 4-Hydroxy-2H-1-benzopyran-2-one; 4-Hydroxy-2H-benzo[b]pyran-2-one; 4-Hydroxy-2H-chromen-2-one; 4-Hydroxychromen-2-one; 4-Hydroxycoumariin; 4-Hydroxycoum|4-Hydroxy-2H-benzo[b]pyran-2-one;|4-Hydroxy-2H-chromen-2-one;|4-Hydroxychromen-2-one;|4-Hydroxycouma|4-Hydroxycoumariin;|4-Hydroxycoumarin ;|Warfarin Impurity B;