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