3-(Bromomethyl)-6-chloro-4-(trifluoromethoxy)pyridine-2-acetic acid
4-(Bromomethyl)-5-chloro-2-(trifluoromethoxy)pyridine-3-acetic acid
4-(Bromomethyl)-5-chloro-3-(trifluoromethoxy)pyridine-2-acetic acid
4-(Bromomethyl)-3-chloro-2-(trifluoromethoxy)pyridine-6-acetic acid