双(3,4-二甲氧基苯基)甲酮

1,2-二(3,4-二甲氧基苯基)乙烷-1,2-二酮

2-(2,5-dimethoxybenzyl)malononitrile

(2,5-dimethoxy-p-xylylene)-di-malononitrile

1-bromo-2,5-bis(chloromethyl)-4-methylbenzene