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