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