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