Ethyl 4-(chloromethyl)-3-(difluoromethyl)-5-methylpyridine-2-carboxylate
Ethyl 4-(chloromethyl)-3-(difluoromethyl)-2-methylpyridine-6-carboxylate
Ethyl 4-(chloromethyl)-3-(difluoromethyl)-2-methylpyridine-5-carboxylate
Ethyl 4-(chloromethyl)-6-(difluoromethyl)-2-methylpyridine-3-carboxylate