Methyl 6-cyano-3-(difluoromethyl)-4-nitropyridine-2-acetate
Methyl 5-(bromomethyl)-2-cyano-4-(difluoromethyl)pyridine-3-carboxylate
5-Cyano-2-(difluoromethyl)-3-nitropyridine-4-acetic acid
Methyl 4-(bromomethyl)-5-cyano-2-(difluoromethyl)pyridine-3-carboxylate