Methyl 2-(fluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-4-acetate
6-(Chloromethyl)-3-hydroxy-2-nitro-4-(trifluoromethoxy)pyridine
4-(Fluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-3-acetic acid
3-(Bromomethyl)-6-hydroxy-2-nitro-5-(trifluoromethoxy)pyridine