Ethyl 6-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-4-carboxylate
6-(Fluoromethyl)-3-hydroxy-4-methyl-2-(trifluoromethoxy)pyridine
2-(Fluoromethyl)-5-hydroxy-3-methyl-4-(trifluoromethoxy)pyridine
Ethyl 5-hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-6-acetate