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