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