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