2-Amino-6-hydroxy-3-(trifluoromethoxy)pyridine-4-sulfonamide
6-Amino-3-hydroxy-4-(trifluoromethoxy)pyridine-2-sulfonamide
2-Amino-5-hydroxy-3-(trifluoromethoxy)pyridine-4-sulfonamide
Methyl 6-amino-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylate