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