Methyl 2-(chloromethyl)-5-(difluoromethyl)-6-fluoropyridine-3-acetate
4-(Chloromethyl)-3-(difluoromethyl)-5-fluoropyridine-2-acetic acid
2-(Aminomethyl)-3-(difluoromethyl)-4-fluoropyridine-5-acetic acid
6-(Difluoromethyl)-3-hydroxy-2-iodopyridine-4-acetonitrile