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