5’-O-Benzoylthymidine is a thymidine analog. Analogs of this series have insertional activity towards replicated DNA. They can be used to label cells and track DNA synthesis[1].
References
[1] Cavanagh BL, et al. Thymidine analogues for tracking DNA synthesis. Molecules. 2011 Sep 15;16(9):7980-93. DOI:10.3390/molecules16097980