Used in pharmaceutical research and development, particularly in the synthesis of antiviral agents. It serves as a key intermediate in the production of nucleotide analogs that inhibit viral replication, especially against retroviruses like HIV. Its tetrasodium salt form enhances solubility, making it suitable for formulation in injectable or intravenous drug preparations. Also investigated for potential use in gene therapy and as a building block in oligonucleotide-based treatments.