3,3'-O-dimethylmyricetin + S-adenosyl-L-homocysteine + H(+) => laricitrin + S-adenosyl-L-methionine
3,3'-o-dimethylmyricetin + s-adenosyl-l-homocysteine + h(+) => laricitrin + s-adenosyl-l-methionine
3,3'-O-dimethylmyricetin + S-adenosyl-L-homocysteine + H(+) => laricitrin + S-adenosyl-L-methionine
3,3'-o-dimethylmyricetin + s-adenosyl-l-homocysteine + h(+) => laricitrin + s-adenosyl-l-methionine