5,7-dihydroxy-4-(hydroxymethyl)-6-methylphthalide + S-adenosyl-L-methionine => 5-hydroxy-4-(hydroxymethyl)-7-methoxy-6-methylphthalide + S-adenosyl-L-homocysteine + H(+)
5,7-dihydroxy-4-(hydroxymethyl)-6-methylphthalide + s-adenosyl-l-methionine => 5-hydroxy-4-(hydroxymethyl)-7-methoxy-6-methylphthalide + s-adenosyl-l-homocysteine + h(+)
5,7-dihydroxy-4-(hydroxymethyl)-6-methylphthalide + S-adenosyl-L-methionine => 5-hydroxy-4-(hydroxymethyl)-7-methoxy-6-methylphthalide + S-adenosyl-L-homocysteine + H(+)
5,7-dihydroxy-4-(hydroxymethyl)-6-methylphthalide + s-adenosyl-l-methionine => 5-hydroxy-4-(hydroxymethyl)-7-methoxy-6-methylphthalide + s-adenosyl-l-homocysteine + h(+)