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