. . . . . . "Xanthosine" . . . . . "Xanthosine" . "Xanthine riboside; 9-\u03B2-(D)-Ribofuranosylxanthine" . "xanthosine" . . "Xanthosine" . . "9-[(2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-3,9-dihydro-1H-purine-2,6-dione" . . . .