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