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
4-Amino-2-(difluoromethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine