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