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