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