29411-74-3 6-Selenoguanosine 9H-Purin-6(1H)-one, 2-amino-9-.beta.-D-ribofuranosyl-6-seleno- 9H-Purine-6(1H)-one, 2-amino-9-.beta.-D-ribofuranosyl-6-seleno- Guanosine, 6-seleno- NSC137679