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