Methyl 2-cyano-5-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
5-Fluoro-2-nitro-4-(trifluoromethoxy)pyridine-3-carboxaldehyde
Methyl 2-cyano-6-iodo-3-(trifluoromethoxy)pyridine-4-carboxylate
4-Fluoro-3-nitro-5-(trifluoromethoxy)pyridine-2-carboxaldehyde