Methyl 2-amino-3-(difluoromethyl)-4-nitropyridine-5-acetate
3-(Bromomethyl)-4-(difluoromethyl)-6-hydroxy-2-methoxypyridine
Ethyl 3-(difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 3-(chloromethyl)-5-(difluoromethyl)-2-methoxypyridine-4-acetate