Methyl 3-(difluoromethyl)-4-methoxy-2-nitropyridine-5-carboxylate
3-(Difluoromethyl)-2-methoxy-5-nitropyridine-6-acetonitrile
4-(Chloromethyl)-2-(difluoromethyl)-3-methyl-5-nitropyridine
Methyl 3-(difluoromethyl)-2-methoxy-6-nitropyridine-4-carboxylate