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