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VdU (5-Vinyl-2’-deoxyuridine) is a synthetic analog of thymidine that can be used to study de novo DNA synthesis and cell proliferation. It is a potential replacement for BrdU (5-Bromo-2’-deoxyuridine) or EdU (5-Ethynyl-2’-deoxyuridine).

VdU incorporates into replicating DNA during the S-phase of the cell cycle instead of natural thymidine. The resulting vinyl-functionalized DNA can be detected by introducing either a biotin or fluorescent dye group via a cooper-free alkene-tetrazine reaction (also known as Inverse electron demand Diels-Alder ligation or IEDDA) and used for subsequent DNA purification or cell imaging tasks.

5-Vinyl-2'-deoxyuridine (5-VINYL-DURD), a thymidine analogue, is incorporated into cellular DNA during DNA replication. 5-Vinyl-2'-deoxyuridine is a click chemistry reagent, it contains an Alkyne group and induces DNA damage leads to apoptosis in human cultured cells[1].

[1] Yizhu Li, et al. DNA templated Click Chemistry via 5-vinyl-2'-deoxyuridine and an acridine-tetrazine conjugate induces DNA damage and apoptosis in cancer cells. Life Sci. 2023 Oct 1:330:122000. DOI:10.1016/j.lfs.2023.122000