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