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