(s)-8-(benzhydryl )-6-isopropyl-3,5-dioxo- 5, 6,7,8,-tetrahydro-3h-pyrazino-[1,2-b]pyridazin-yl-isobutyrate antiviral agent for use in treating influenza
Disclosed herein is the use of a specific compound e.g. (S)-8-(benzhydryl )-6-isopropyl-3,5-dioxo- 5, 6,7,8,-tetrahydro-3H-pyrazino-[1,2-b]pyridazin-yl-isobutyrate (RegNo 1674397-77-3) for use in a method of treating an influenza infection.