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