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