Used primarily in medical research, this compound is a thymidine analog that incorporates into DNA, making it valuable for studying DNA synthesis and repair mechanisms. It is particularly useful in radiolabeling experiments to track cell proliferation and assess the effectiveness of antiviral and anticancer therapies. Additionally, it has been explored for its potential in targeted cancer treatments, as it can sensitize tumor cells to radiation therapy. Its ability to inhibit viral replication also makes it a candidate for antiviral drug development.