3-hydroxy-4,5-dimethoxyphenethylamine + S-adenosyl-L-methionine => N-methyl-3-hydroxy-4,5-dimethoxyphenethylamine + S-adenosyl-L-homocysteine + H(+)
3-hydroxy-4,5-dimethoxyphenethylamine + s-adenosyl-l-methionine => n-methyl-3-hydroxy-4,5-dimethoxyphenethylamine + s-adenosyl-l-homocysteine + h(+)
3-hydroxy-4,5-dimethoxyphenethylamine + S-adenosyl-L-methionine => N-methyl-3-hydroxy-4,5-dimethoxyphenethylamine + S-adenosyl-L-homocysteine + H(+)
3-hydroxy-4,5-dimethoxyphenethylamine + s-adenosyl-l-methionine => n-methyl-3-hydroxy-4,5-dimethoxyphenethylamine + s-adenosyl-l-homocysteine + h(+)