131193-99-2 2,4(1H,3H)-Pyrimidinedione, 6-[(1,1-dimethylethyl)thio]-1-[(2-hydroxyethoxy)methyl]-5-methyl- 6-(tert-Butylthio)-1-[(2-hydroxyethoxy)methyl]thymine 6tBuS-1-(2OHEtOMe)T AIDS-002555 AIDS002555 HEPT deriv.