5-(Difluoromethyl)-2-methoxy-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
2-(Bromomethyl)-3-methyl-4-nitro-5-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-3-methoxy-6-(trifluoromethoxy)pyridine-2-carboxaldehyde
3-(Difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine-4-acetic acid