(6-(Hydroxymethyl)-1,4-dioxan-2-yl)uracil 1-[(2R,6R)-6-(Hydroxymethyl)-1,4-dioxan-2-yl]uracil 101527-68-8 2,4(1H,3H)-Pyrimidinedione, 1-[6-(hydroxymethyl)-1,4-dioxan-2-yl]-, (2R-cis)- 6-OHMe-1,4-dOX-U AIDS-002942 AIDS002942