Used primarily as an antiviral agent, this compound exhibits activity against a range of DNA viruses including herpesviruses and hepatitis B. It functions as an acyclic nucleoside phosphonate analog, interfering with viral DNA polymerase activity, thereby inhibiting viral replication. Due to its structural stability and ability to bypass initial phosphorylation steps, it shows enhanced efficacy in cells with low kinase activity. It has been investigated for use in treating drug-resistant viral infections and has potential in topical and systemic formulations. Its broad antiviral spectrum also makes it a candidate for research in emerging viral diseases.