3,6-dimethoxy-4,5-dimethylbenzocyclobuten-1-ol

2-amino-3,6-dimethoxy-4,5-dimethylbenzoic acid

5,8-dimethoxy-2,3-dimethylanthracene-1,4-dione

1,4-二甲氧基-2,3-甲基苯

2,3-双-溴甲基-1,4-二甲氧基苯