3-Hydroxy-2-methoxy-6-(trifluoromethoxy)pyridine-5-carboxaldehyde
6-Hydroxy-2-methoxy-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
4-(Difluoromethyl)-3-fluoro-2-nitro-5-(trifluoromethoxy)pyridine
5-(Difluoromethyl)-4-fluoro-3-nitro-2-(trifluoromethoxy)pyridine