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