Ethyl 2-hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-6-acetate
2-Hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-4-carboxylic acid
Ethyl 2-hydroxy-3-nitro-4-(trifluoromethoxy)pyridine-6-acetate
Methyl 4-hydroxy-3-nitro-6-(trifluoromethoxy)pyridine-2-acetate