142941-57-9 2-HOCH2-4-U-tetraHthiophene 2-Hydroxymethyl-4-(1H-uracil-1-yl)-tetrahydrothiophene AIDS-002298 AIDS002298 L-threo-Pentitol, 1,2,3,4-tetradeoxy-2-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-1,4-epithio-