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Abstract
The isolation is described of an unusual chlorinated diphenyl ether named methyl 3,5-dichloro-6-(6-hydroxy-4-methoxy-3-methoxycarbonyl-2-methylphenoxy)-2-hydroxy-4-methylbenzoate that was obtained from the trunk of Byrsonima microphylla (Malpighiaceae). The structure was elucidated by a spectroscopic data analysis, and the presence of this compound in heartwood was confirmed by HPLC and HPTLC analyses.