3-Amino-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
5-Amino-3-(fluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine
4-Amino-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxaldehyde
5-Amino-4-(fluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine