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