Alanine, N-[[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 7-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine

N-[[P(S)]-2′-Deoxy-P-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethyl]-2′,2′-dimethyl-5′-guanylyl]-L-alanine 1-methylethyl ester

N-[[P(R)]-2′-Deoxy-P-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethyl]-2′,2′-dimethyl-5′-guanylyl]-L-alanine 1-methylethyl ester

N-[2′-Deoxy-P-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethyl]-2′,2′-dimethyl-5′-guanylyl]-L-alanine 1-methylethyl ester

N-[[P(S)]-2′-Deoxy-P-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethyl]-2′,2′-dimethyl-5′-guanylyl]-D-alanine 1-methylethyl ester

N-[[P(R)]-2′-Deoxy-P-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethyl]-2′,2′-dimethyl-5′-guanylyl]-D-alanine 1-methylethyl ester

N-[2′-Deoxy-P-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethyl]-2′,2′-dimethyl-5′-guanylyl]-D-alanine 1-methylethyl ester

N-[2′-Deoxy-P-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethyl]-2′,2′-dimethyl-5′-guanylyl]alanine 1-methylethyl ester

L-Alanine, N-[(S)-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 6-chloro-9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-9H-purin-2-amine

L-Alanine, N-[(R)-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 6-chloro-9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-9H-purin-2-amine

L-Alanine, N-[[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 6-chloro-9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-9H-purin-2-amine

D-Alanine, N-[(S)-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 6-chloro-9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-9H-purin-2-amine

D-Alanine, N-[(R)-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 6-chloro-9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-9H-purin-2-amine

D-Alanine, N-[[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 6-chloro-9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-9H-purin-2-amine

Alanine, N-[[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 6-chloro-9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-9H-purin-2-amine

L-Alanine, N-[(S)-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-6-fluoro-9H-purin-2-amine

L-Alanine, N-[(R)-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-6-fluoro-9H-purin-2-amine

L-Alanine, N-[[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-6-fluoro-9H-purin-2-amine

D-Alanine, N-[(S)-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-6-fluoro-9H-purin-2-amine

D-Alanine, N-[(R)-[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 9-(2-deoxy-2,2-dimethyl-β-D-erythro-pentofuranosyl)-6-fluoro-9H-purin-2-amine