4-(Bromomethyl)-2-hydroxy-5-nitro-3-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-5-fluoro-2-methyl-3-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-3-fluoro-5-methyl-2-(trifluoromethoxy)pyridine
3-Hydroxy-5-iodo-6-(trifluoromethoxy)pyridine-2-acetic acid