Additional file 5: of Larvicidal activity of lignans and alkaloid identified in Zanthoxylum piperitum bark toward insecticide-susceptible and wild Culex pipiens pallens and Aedes aegypti KimSoon-Il AhnYoung-Joon 2017 1H NMR (CDCl3, 600 MHz) spectrum of (+)-xanthoxylol-γ,γ-dimethylallylether (2). (TIF 98 kb)