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