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Eupatilin (5,7-Dihydroxy-3',4',6-trimethoxyflavone) is an O-methylated flavone, a type of flavonoids. It can be found in Artemisia asiatica (Asteraceae).
References
Kim DH, Na HK, Oh TY, Kim WB, Surh YJ (September 2004). "Eupatilin, a pharmacologically active flavone derived from Artemisia plants, induces cell cycle arrest in ras-transformed human mammary epithelial cells". Biochemical Pharmacology. 68 (6): 1081–7. doi:10.1016/j.bcp.2004.04.027. PMID15313404.