4-methoxyphenol + S-adenosyl-L-methionine = 1,4-dimethoxybenzene + S-adenosyl-L-homocysteine + H(+)
4-methoxyphenol + s-adenosyl-l-methionine = 1,4-dimethoxybenzene + s-adenosyl-l-homocysteine + h(+)
4-methoxyphenol + S-adenosyl-L-methionine = 1,4-dimethoxybenzene + S-adenosyl-L-homocysteine + H(+)
4-methoxyphenol + s-adenosyl-l-methionine = 1,4-dimethoxybenzene + s-adenosyl-l-homocysteine + h(+)