Warfarin sodium clathrate, sodium 2-oxo-3-[(1RS)-3-oxo-1-phenylbutyl]-2H-1-benzopyran-4-olate propan-2-ol, 4-Hydroxy-3-(3-oxo-1-phenylbutyl)-2H-1-benzopyran-2-one sodium salt compd. with 2-propanol, [[3-(alpha-acetonylbenzyl)-2-oxo-2H-1-benzopyran-4-yl]oxy]-sodium compd. with iso-PrOH, 2-Propanol compd. with 4-hydroxy-3-(3-oxo-1-phenylbutyl)-2H-1-benzopyran-2-one sodium salt