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