2,4(1H,3H)-Pyrimidinedione, 1-(3-hydroxy-4-(hydroxymethyl)cyclopentyl)-5-iodo-, (1alpha,3beta,4alpha)-(+-)- 83967-03-7 C-IDU Carbocyclic 2'-deoxy-5-iodouridine Carbocyclic 5-iodo-2'-deoxyuridine NSC 641030