3-(Aminomethyl)-6-(difluoromethyl)-2-hydroxypyridine-5-acetic acid
4-(Difluoromethyl)-6-iodo-3-methoxypyridine-2-acetonitrile
6-(Chloromethyl)-3-(difluoromethyl)-4-hydroxypyridine-2-acetonitrile
2-(Bromomethyl)-6-(difluoromethyl)-5-iodopyridine-3-acetic acid