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