142941-62-6 2-HOCH2-4-C-tetraHthiophene 2-Hydroxymethyl-4-(1H-cytosin-1-yl)-tetrahydrothiophene AIDS-002295 AIDS002295 L-threo-Pentitol, 2-(4-amino-2-oxo-1(2H)-pyrimidinyl)-1,2,3,4-tetradeoxy-1,4-epithio-