an 8-hydroxyflavone + S-adenosyl-L-methionine <=> an 8-methoxyflavone + S-adenosyl-L-homocysteine + H(+)
an 8-hydroxyflavone + s-adenosyl-l-methionine <=> an 8-methoxyflavone + s-adenosyl-l-homocysteine + h(+)
an 8-hydroxyflavone + S-adenosyl-L-methionine <=> an 8-methoxyflavone + S-adenosyl-L-homocysteine + H(+)
an 8-hydroxyflavone + s-adenosyl-l-methionine <=> an 8-methoxyflavone + s-adenosyl-l-homocysteine + h(+)