1-(5-O-Acetyl-3-phthalimido-2,3,6-trideoxy-.beta.-L-ribo-hexofuranosyl)thymine 136035-10-4 2-4(1H,3H)-Pyrimidinedione, 1-[5-O-acetyl-2,3,6-trideoxy-3-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-.beta.-L-ribo-hexofuranosyl]-5-methyl- AIDS-002983 AIDS002983 L-Acosamine nucleoside