3'-Deoxythymidine-5'-O-(1-Thiotriphosphate)

2',3'-Dideoxythymidine-5'-O-(1-Thiotriphosphate) is a sugar modified nucleoside triphosphate where the 2' and 3' hydroxyl groups are absent, resulting in chain termination. This ddTTP analog also contains a 1-Thiotriphosphate which results in a nuclease resistant phosphorothioate linkage. The inability of polymerases to extend from a dideoxy nucleotide causes chain termination and is useful in antiviral research and in a variety of biotechnology applications.