2'-Deoxy-O(6)-ethylguanosine 50704-46-6 9H-Purin-2-amine, 9-(2-deoxy-beta-D-erythro-pentofuranosyl)-6-ethoxy- NSC 240591 O(6)-Ethyl-2'-deoxyguanosine O(6)-Ethyldeoxyguanosine