Ethyl 4-amino-3-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxylate
4-Amino-3-(difluoromethyl)-2-hydroxy-6-(trifluoromethoxy)pyridine
Ethyl 3-amino-2-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxylate
2-Amino-3-hydroxy-4-(trifluoromethoxy)pyridine-6-methanol