4-(Chloromethyl)-2-hydroxy-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
5-(Bromomethyl)-3-hydroxy-4-methyl-2-(trifluoromethoxy)pyridine
3-Hydroxy-6-nitro-2-(trifluoromethoxy)pyridine-4-acetic acid
5-Hydroxy-2-nitro-4-(trifluoromethoxy)pyridine-3-acetic acid