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