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