label: 3,7-dimethylquercitin 4'-O-methyltransferase activity
label_lc: 3,7-dimethylquercitin 4'-o-methyltransferase activity
description: "Catalysis of the reaction: 3',4',5-trihydroxy-3,7-dimethoxyflavone + S-adenosyl-L-methionine(1+) = 3',5-dihydroxy-3,4',7-trimethoxyflavone + S-adenosyl-L-homocysteine + H+."