As one of the most expensive wood trees, Ormosia henryi has been planted more than 1000 mu in South China now. A mass of Ormosia henryi leaves was naturally abandoned and degradable so that the resources were wasted. Therefore, in order to overcome the negative effects, Py-GC/MS was used to analyze the extractives of Ormosia henryi leaves. Relative content of each component was determined by area normalization. The benzene/ethanol extractives contain 57 compounds namely thiophene, 2,5-dibutyl-, tetradecanal, rishitin, pyrrole, pyridine, 5-hexyl...
