(+/-)-9-[(1.beta.,2.alpha.,3.beta.)-2,3-bis(hydroxymethyl)-1-cyclobutyl]thymine (+/-)-Cyclobut-T 126261-64-1 129261-94-5 (1R,2R,3S) 2,4(1H,3H)-Pyrimidinedione, 1-[2,3-bis(hydroxymethyl)cyclobutyl]-5-methyl-, rel-(1R,2R,3S)- AIDS-001275 AIDS001275