1-(3-Azido-2,3-dideoxy-.beta.-D-erythropentofuranosyl)-5-methyl-2(1H)-pyrimidinone 121086-97-3 2(1H)-Pyrimidinone, 1-(3-azido-2,3-dideoxy-b-D-erythro-pentofuranosyl)-5-methyl- 4-HAZT AIDS-000459 AIDS000459