2,4-Pyrimidinediamine, 5-(4-chlorophenyl)-6-ethyl- & Thymidine, 3'-azido-3'-deoxy- 5-(4-Chlorophenyl)-6-ethyl-2,4-pyrimidinediamine & 3'-Azido-3'-deoxythymidine AIDS-000870 AIDS000870 Pyrimethamine & AZT