2-(Difluoromethyl)-6-methoxy-3-nitro-5-(trifluoromethoxy)pyridine
2-(Bromomethyl)-4-methoxy-6-nitro-3-(trifluoromethoxy)pyridine
5-(Chloromethyl)-2-methoxy-3-(trifluoromethoxy)pyridine-6-methanol
4-(Chloromethyl)-3-methoxy-6-(trifluoromethoxy)pyridine-2-methanol