Ethyl 3-(difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 3-(chloromethyl)-5-(difluoromethyl)-2-methoxypyridine-4-acetate
4-Bromo-5-chloro-2-(difluoromethyl)pyridine-3-acetic acid
Methyl 2-(difluoromethyl)-3-fluoro-6-nitropyridine-4-acetate