label: 8-hydroxyquercitin 8-O-methyltransferase activity
label_lc: 8-hydroxyquercitin 8-o-methyltransferase activity
description: "Catalysis of the reaction: 3,3',4',5,7,8-hexahydroxyflavone + S-adenosyl-L-methionine(1+) = 3,3',4',5,7-pentahydroxy-8-methoxyflavone + S-adenosyl-L-homocysteine + H+."