Methyl 6-amino-4-(difluoromethyl)-2-nitropyridine-3-carboxylate
Methyl 2-amino-4-(difluoromethyl)-5-nitropyridine-3-carboxylate
2-Amino-6-(chloromethyl)-4-(difluoromethyl)-3-(trifluoromethyl)pyridine
2-Amino-5-(chloromethyl)-6-(difluoromethyl)-3-(trifluoromethyl)pyridine