Methyl 6-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 3-hydroxy-2-methoxy-5-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 2-hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-6-acetate
3-Fluoro-2-nitro-6-(trifluoromethoxy)pyridine-5-acetonitrile