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