1,2-二溴-3,4,5,6-四氢甲基苯

2,3,4,5-tetramethylbenzenesulfonic acid

1,2,3,4-四甲基苯

2,3,4,5-四甲苯胺

tetramethyl 5-methoxybenzene-1,2,3,4-tetracarboxylate