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