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