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