Methyl 3-chloro-4-nitro-2-(trifluoromethoxy)pyridine-5-carboxylate
3-Chloro-4-(chloromethyl)-2-iodo-5-(trifluoromethoxy)pyridine
Methyl 4-chloro-3-iodo-5-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 4-chloro-2-iodo-5-(trifluoromethoxy)pyridine-3-carboxylate