133201-14-6 3'-Azido-3'-deoxythymidine-5'-(ethyl methoxyvalinyl)phosphate 5'-MeValPO3(Et) AZT AIDS-002029 AIDS002029 L-Valine, N-(3'-azido-3'-deoxy-P-ethyl-5'-thymidylyl)-, methyl ester, (R)-