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