Methyl 5-hydroxy-2-nitro-4-(trifluoromethoxy)pyridine-3-acetate
Methyl 5-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-4-acetate
5-(Bromomethyl)-3-iodo-4-methoxy-2-(trifluoromethoxy)pyridine
3-(Bromomethyl)-5-iodo-2-methoxy-4-(trifluoromethoxy)pyridine