6-(Difluoromethyl)-2-hydroxy-4-nitro-3-(trifluoromethoxy)pyridine
4-(Chloromethyl)-3-fluoro-5-(trifluoromethoxy)pyridine-2-acetic acid
5-(Chloromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-3-acetic acid
5-(Chloromethyl)-4-(difluoromethyl)-2-fluoro-3-(trifluoromethoxy)pyridine