Methyl 5-chloro-3-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 5-chloro-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 3-chloro-4-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 2-chloro-6-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxylate