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