Methyl 2-(difluoromethyl)-3-hydroxy-6-methoxypyridine-5-carboxylate
Methyl 5-amino-2-nitro-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 3-(difluoromethyl)-5-nitro-2-(trifluoromethoxy)pyridine-6-acetate
5-(Difluoromethyl)-2-fluoropyridine-4-acetonitrile