2-Cyano-5-nitro-4-(trifluoromethoxy)pyridine-3-acetic acid
Methyl 4-cyano-3-nitro-2-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 4-cyano-6-nitro-3-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 4-cyano-2-nitro-3-(trifluoromethoxy)pyridine-5-carboxylate