3-Hydroxy-2-nitro-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
2-Hydroxy-6-nitro-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
3-Iodo-4-methyl-6-(trifluoromethoxy)pyridine-2-acetonitrile
2-Hydroxy-6-nitro-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine