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