Methyl 2-bromo-3-cyano-4-(trifluoromethoxy)pyridine-5-acetate
Methyl 3-bromo-4-chloro-6-(trifluoromethoxy)pyridine-2-acetate
Methyl 3-bromo-2-fluoro-5-(trifluoromethoxy)pyridine-6-acetate
Methyl 2-bromo-3-chloro-4-(trifluoromethoxy)pyridine-5-acetate