2(1H)-Pyrimidinone, 1-(2-deoxy-beta-D-erythro-pentofuranosyl)-4-ethoxy-5-methyl- 4-O-Ethylthymidine 59495-22-6 O(4)-Ethyl-2'-deoxythymidine O(4)-Ethyldeoxythymidine O(4)-Ethylthymidine Thymidine, 4-O-ethyl-