(-)-1-[(2R,4R)-2-Hydroxymethyl)-1,3-dioxan-4-yl]thymine (-)-D-.beta.-Dioxolane T (-)-D-.beta.-Dioxolane-thymine 136982-89-3 2,4(1H,3H)-Pyrimidinedione, 1-[(2R,4R)-2-(hydroxymethyl)-1,3-dioxolan-4-yl]-5-methyl- AIDS-004279 AIDS004279 DOT Dioxolane T Dioxolane-THYMINE