apigenin 4'-O-methyltransferase activity
apigenin 4'-o-methyltransferase activity
S-adenosyl-L-methionine:5,7,4'-trihydroxyflavone 4'-O-methyltransferase activity
s-adenosyl-l-methionine:5,7,4'-trihydroxyflavone 4'-o-methyltransferase activity