3-(3,4-二羟基苯基)-6,8-二羟基异苯并吡喃-1-酮

1,8-二羟基-2,3,4,6-四甲氧基-9H-氧杂蒽-9-酮

methyl 2-hydroxy-4,6-dimethoxy-3-methylbenzoate

methyl 3-formyl-2-hydroxy-4,6-dimethoxybenzoate

3,5-dimethoxy-2-methylphenol