4,5,6-trimethoxy-1H-indole-2,3-dione

4,5,6-trimethoxy-N-(p-tolylsulphonyl)indole

3-ethoxycarbonyl-3-hydroxy-4,5,6-trimethoxyindole

3,4,5-三甲氧基苯胺

2-amino-4,5,6-trimethoxy-α-chloroacetophenone