Ethyl 6-hydroxy-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-carboxylate
6-(Fluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-4-methanol
5-(Fluoromethyl)-4-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine
3-(Fluoromethyl)-4-hydroxy-2-nitro-5-(trifluoromethoxy)pyridine