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