Acacetin
Acacetin is a 4′-O-methylated flavone of the parent compound apigenin, found in Robinia pseudoacacia, Turnera diffusa, Betula pendula, and in the fern Asplenium normale.
In plant synthesis the enzyme apigenin 4′-O-methyltransferase uses S-adenosyl methionine and 5,7,4′-trihydroxyflavone to produce S-adenosylhomocysteine and 4′-methoxy-5,7-dihydroxyflavone.
It shows moderate aromatase inhibition.