Ethyl 3-(fluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 5-(fluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
3-Hydroxy-2-nitro-5-(trifluoromethoxy)pyridine-6-methanol
2-Hydroxy-5-nitro-4-(trifluoromethoxy)pyridine-3-methanol