8-hydroxyquercitin 8-O-methyltransferase activity
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+.
GO:0008757
S-adenosylmethionine-dependent methyltransferase activity
is_a
8-hydroxyquercetin 8-O-methyltransferase activity
related
S-adenosyl-L-methionine:3,3',4',5,7,8-hexahydroxyflavone 8-O-methyltransferase activity
related
flavonol 8-O-methyltransferase activity
related
flavonol 8-methyltransferase activity
related