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