4-Hydroxy-2-methyl-3-(trifluoromethoxy)pyridine-6-methanol
3-(Fluoromethyl)-6-hydroxy-2-nitro-5-(trifluoromethoxy)pyridine
4-(Fluoromethyl)-3-hydroxy-6-nitro-2-(trifluoromethoxy)pyridine
4-(Fluoromethyl)-2-hydroxy-3-nitro-6-(trifluoromethoxy)pyridine