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