100515-08-0 2(1H)-Pyrimidinone, 1-(2-(deoxy-5-O-(hydroxy((hydroxyphosphonooxy)phosphinyl)oxy)phosphinyl)-beta-D-erythro-pentofuranosyl)-5-methyl-4-(1-methylethoxy)- 4-IP-Ttp O(4)-Isopropylthymidine 5'-phosphate