Wood extractives for bioenergy with high additional value is looked upon as a strategy task. In this paper, the chemical components in the benzene/ethanol extractives of Eucalyptus urophylla wood were isolated and identified by Py-GC/MS so as to increase economic benefits. The relative content of each component was determined by peak area normalization. 73 compounds in the extractives were identified. The mainly abundant constituents were ergosta-4,6,22-trien-3.beta.-ol (11.6%), .beta.-sitosterol (10.02%), hexadecanoic acid (7.18%), phenol, 2,6-dimethoxy-(6.46%), carbon dioxide (5.62%), 9,12-o...
