4-(Difluoromethyl)-2-methoxy-6-methylpyridine-3-acetic acid
Methyl 3-(chloromethyl)-5-(difluoromethyl)-2-iodopyridine-6-acetate
Methyl 3-(chloromethyl)-4-(difluoromethyl)-6-iodopyridine-2-acetate
Methyl 3-(chloromethyl)-2-(difluoromethyl)-6-iodopyridine-4-acetate