Objective To study the chemical constitunents in stem of Zanthoxylum dissitum.Methods Silica gel column chromatography and recrystallization were applied for the isolation and purification of the constituents.The structures were elucidated by 1H-NMR,13C-NMR,MS and their physicochemical properties.Results From the crude ethyl alcohol fraction of the stems of Zanthoxylum dissitum,6 compounds were isolated and identified as β-sitosterol(1),vanillin(2),episesamin(3),(-)pluviatilol-γ,γ-dimethyallyl ether(4),fargesin(5),(-)eudesmin(...