sodium ((2R,3S,4R,5R)-5-(2,6-dioxo-2,3-dihydro-1H-purin-9(6H)-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl phosphate;Xanthosine 5'-monophosphate disodium salt;5'-Xanthylic acid, disodium salt;disodium [(2R,3S,4R,5R)-5-(2,6-dioxo-2,3,6,9-tetrahydro-1H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate;sodium ((2R,3S,4R,5R)-5-(2,6-dioxo-2,3-dihydro-1H-purin-9(6H)-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl phosphate