ethyl 2-(bromomethyl)-4,5-dimethoxyphenylacetate

6,7-二甲氧基-3-异苯并二氢吡喃-4-酮

3,4-二甲氧基苯乙酸

2-[2',6'-dihydroxybenzoyl]pyrrole

4,5-dimethoxy-2-[(phenylacetamino)methyl]phenylacetic acid