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