2-(Bromomethyl)-4-(difluoromethyl)-3-fluoro-5-hydroxypyridine
3-(Aminomethyl)-6-(difluoromethyl)-4-fluoro-2-hydroxypyridine
5-(Aminomethyl)-2-(difluoromethyl)-3-fluoro-4-hydroxypyridine
2-(Difluoromethyl)-3-fluoro-5-hydroxy-4-(trifluoromethyl)pyridine