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