T-705RMP (ammonium) is primarily used as an intermediate in the synthesis of antiviral agents, particularly in the development of broad-spectrum antiviral drugs. It plays a critical role in inhibiting viral RNA replication, making it valuable in research for treatments against RNA viruses such as influenza, Ebola, and SARS-CoV-2. Due to its ability to be metabolized into the active antiviral compound T-705 (favipiravir), it serves as a key prodrug component in pharmaceutical formulations. Its ammonium salt form enhances solubility and bioavailability, which supports its use in oral and injectable dosage forms during preclinical and clinical development. The compound is mainly utilized in laboratory and pharmaceutical settings for drug discovery and optimization rather than in industrial or consumer applications.