Methyl 4-(chloromethyl)-2-hydroxy-6-(trifluoromethoxy)pyridine-3-carboxylate
5-Hydroxy-3-nitro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Hydroxy-5-nitro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
4-Hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-5-acetic acid