Ethyl 3-(difluoromethyl)-4-iodo-6-nitropyridine-2-acetate
Ethyl 2-(difluoromethyl)-3-iodo-5-methoxypyridine-6-carboxylate
Methyl 5-(difluoromethyl)-2-iodo-3-methoxypyridine-4-carboxylate
Methyl 4-(difluoromethyl)-6-iodo-3-methoxypyridine-2-carboxylate