6-Fluoro-3-[(trimethylsilyl)oxy]-2-pyrazinecarboxamide is an intermediate in synthesizing T-705RTP (T003210), a derivative of T-705 (F103350) which has activity against the lethal H5N1 influenza A viruses. T-705RTP which has the triphosphate group, gets strongly inhibited by the influenza virus RNA polymerase activity in comparison with T-705RMP (T003202).