108742-09-2 6H-Purin-6-one, 2-amino-9-[2,3-dihydroxy-4-(hydroxymethyl)cyclopentyl]-1,9-dihydro-, (1a,2b,3a,4a)- AIDS-001037 AIDS001037 Acycoguanosine C-xyloG Carbocyclic-xyloguanosine NSC615827