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Euphorbia hirta L., a kind of herbs belonging to family Euphorbiaceae, has been found a lot in the Mekong Delta. From the ethyl acetat and methanol fractions of this plant, four pure compounds were isolated and identified their chemical structure by spectroscopic techniques including quercitrin (1), luteolin (2), quercetin (3) and caffeic acid (4). The effect of crude ethanolic extract and some fractioned extracts as well as four isolated compounds from E hirta L., collected in the Mekongdoi:10.15625/2525-2518/56/4a/12753 fatcat:7hem5h2cmzfgri5ff7lybl7vry