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