Methyl 3-bromo-6-(difluoromethyl)-2-nitropyridine-4-carboxylate
Methyl 5-bromo-2-(difluoromethyl)-3-nitropyridine-6-carboxylate
2-(Aminomethyl)-4-chloro-5-cyano-3-(difluoromethyl)pyridine
Methyl 4-bromo-5-(difluoromethyl)-2-nitropyridine-3-carboxylate