2-Methoxy-6-nitro-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
2-(Bromomethyl)-3-methoxy-4-(trifluoromethoxy)pyridine-6-carboxylic acid
2-Methoxy-6-nitro-3-(trifluoromethoxy)pyridine-5-carboxaldehyde
5-(Bromomethyl)-2-methoxy-3-(trifluoromethoxy)pyridine-6-carboxaldehyde