2,5-二甲氧基苯-1,4-二甲醛

2,5-二溴氢醌

1,4-diethynyl-2,5-dimethoxybenzene

9,10-dimethoxy-1,2,3,4,5,6,7,8-octamethylanthracene

(4-bromo-2,5-dimethoxyphenyl)methanol