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