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