Ethyl 6-cyano-3-nitro-4-(trifluoromethoxy)pyridine-2-carboxylate
3-(Difluoromethyl)-6-fluoro-4-(trifluoromethoxy)pyridine-2-methanol
Methyl 5-cyano-3-nitro-4-(trifluoromethoxy)pyridine-2-acetate
4-(Chloromethyl)-5-cyano-2-nitro-3-(trifluoromethoxy)pyridine