4-Amino-3-(difluoromethyl)-5-hydroxy-2-(trifluoromethyl)pyridine
4-Amino-3-(difluoromethyl)-2-hydroxy-5-(trifluoromethyl)pyridine
4-Amino-6-(difluoromethyl)-2-hydroxy-3-(trifluoromethyl)pyridine
4-Amino-2-(difluoromethyl)-6-hydroxy-3-(trifluoromethyl)pyridine