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