3-Amino-5-(difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine
3-Amino-5-(difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine
3-Amino-2-(chloromethyl)-6-iodo-5-(trifluoromethoxy)pyridine
3-Amino-4-(difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine