1-(3'-Azido-2',3'-dideoxy-.beta.-D-threo-pentofuranosyl)thymine 2,4(1H,3H)-Pyrimidinedione, 1-(3-azido-2,3-dideoxy-.beta.-D-threo-pentofuranosyl)-5-methyl- 73971-82-1 AIDS-000364 AIDS000364 AZT (threo) AzddXyloT NSC602670