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