catechol + S-adenosyl-L-methionine = guaiacol + S-adenosyl-L-homocysteine + H(+)
catechol + s-adenosyl-l-methionine = guaiacol + s-adenosyl-l-homocysteine + h(+)
catechol + S-adenosyl-L-methionine = guaiacol + S-adenosyl-L-homocysteine + H(+)
catechol + s-adenosyl-l-methionine = guaiacol + s-adenosyl-l-homocysteine + h(+)