Ethyl 5-(difluoromethyl)-4-iodo-3-nitropyridine-2-carboxylate
Ethyl 4-(chloromethyl)-5-(difluoromethyl)-2-iodopyridine-3-carboxylate
Ethyl 3-(chloromethyl)-4-(difluoromethyl)-5-iodopyridine-2-carboxylate
3-(Difluoromethyl)-6-methoxy-2-methylpyridine-5-acetic acid