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