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