1beta-D-Arabinofuranosylthymine 5'-triphosphate 2,4(1H,3H)-Pyrimidinedione, 1-(5-O-(hydroxy((hydroxy(phosphonooxy)phosphinyl)oxy)phosphinyl)-beta-D-arabinofuranosyl)-5-methyl- 66097-68-5 Ara ttp Ara-ttp Arabinosylthymine 5'-triphosphate