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