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