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