Ethyl 4-nitro-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-carboxylate
3,5-Dimethoxy-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
Methyl 3-nitro-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxylate
2,4-Dimethoxy-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine