Methyl 4-hydroxy-2-iodo-3-(trifluoromethoxy)pyridine-6-carboxylate
2-(Difluoromethyl)-3-hydroxy-4-nitro-5-(trifluoromethoxy)pyridine
5-(Fluoromethyl)-2-hydroxy-3-nitro-4-(trifluoromethoxy)pyridine
4-(Fluoromethyl)-5-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine