Methyl 3-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine-4-acetate
6-(Bromomethyl)-3-hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine
Methyl 5-hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-2-acetate
2-(Bromomethyl)-5-hydroxy-3-methoxy-6-(trifluoromethoxy)pyridine