A New Acetophenone of Aerial Parts from Rumex aquatica

A new acetophenone named rumexin was isolated from methanolic extract of Rumex aquatica together with eight known compounds, , , , , caffeic acid, , 1-methyl caffeic acid, . All of the above compounds were isolated from Rumex aquatica for the first time, and structures of compounds were established by spectroscopic means.