Methyl 5-(bromomethyl)-2-(difluoromethyl)-3-fluoropyridine-4-carboxylate
3-(Bromomethyl)-5-(difluoromethyl)-6-fluoropyridine-2-acetic acid
Ethyl 6-(difluoromethyl)-2-fluoro-3-nitropyridine-4-acetate
Ethyl 2-(difluoromethyl)-3-fluoro-6-nitropyridine-5-acetate