3-Hydroxy-4-methyl-2-(trifluoromethoxy)pyridine-6-sulfonamide
5-(Fluoromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-3-acetic acid
3-(Chloromethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-5-acetonitrile
4-(Fluoromethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine-3-acetic acid