Ethyl 6-(chloromethyl)-3-(difluoromethyl)-2-methoxypyridine-4-carboxylate
Ethyl 2-(chloromethyl)-4-(difluoromethyl)-6-methoxypyridine-3-carboxylate
Ethyl 2-(chloromethyl)-3-(difluoromethyl)-6-methoxypyridine-4-carboxylate
Ethyl 2-(chloromethyl)-3-(difluoromethyl)-4-methoxypyridine-6-carboxylate