Ethyl 6-chloro-4-nitro-2-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 3-cyano-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-carboxylate
Methyl 6-cyano-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-carboxylate
Methyl 4-chloro-3-nitro-5-(trifluoromethoxy)pyridine-2-carboxylate