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