8-hydroxy-7-methoxyflavone + S-adenosyl-L-methionine => 7,8-dimethoxyflavone + S-adenosyl-L-homocysteine + H(+)
8-hydroxy-7-methoxyflavone + s-adenosyl-l-methionine => 7,8-dimethoxyflavone + s-adenosyl-l-homocysteine + h(+)
8-hydroxy-7-methoxyflavone + S-adenosyl-L-methionine => 7,8-dimethoxyflavone + S-adenosyl-L-homocysteine + H(+)
8-hydroxy-7-methoxyflavone + s-adenosyl-l-methionine => 7,8-dimethoxyflavone + s-adenosyl-l-homocysteine + h(+)