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