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